Hidden Earth 2025: Confirmed Lectures, Films and Workshops

[HiddenEarth]

HIDDEN EARTH 2025:
Cave Archaeology in Britain - new discoveries​

Last year we ran a very successful workshop exploring collaboration and communication between everyone involved and interested in cave archaeology. One of the planned outcomes from that discussion was that we should run a regular session at Hidden Earth to showcase new archaeological discoveries from caves.

Read more:

Hidden Earth 2025 | Cave Archaeology in Britain - new discoveries

Last year we ran a very successful workshop exploring collaboration and communication between everyone involved and interested in cave archaeology. One of the planned outcomes from that discussion was that we should run a regular session at Hidden Earth to showcase new archaeological discoveries...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

HIDDEN EARTH 2025:
Redhouse Lane Swallet Extensions​

At Hidden Earth 2024 we reported a breakthrough into a major system extending the original cave from 1.6km to 4km. Since that time the system has been extended to the south, north and north-west. The extremities of these passages extend from the northern limit of Slaughter Stream Cave to almost the River Wye, passing under known cave in the Mailscot Valley.

Read more:

Hidden Earth 2025 | Redhouse Lane Swallet Extensions

At Hidden Earth 2024 we reported a breakthrough into a major system extending the original cave from 1.6km to 4km. Since that time the system has been extended to the south, north and north-west. The extremities of these passages extend from the northern limit of Slaughter Stream Cave to almost...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

HIDDEN EARTH 2025:
Demonstration, a painting from a sketch done underground​

Artist Robin Gray Art will be demonstrating, a painting from a sketch done underground. Robin will start by showing sketches done underground and decide which one to base a painting on. A must for budding underground artists

Read more...

Hidden Earth 2025 | Demonstration, a painting from a sketch done underground

Robin will start by showing sketches done underground and decide which one to base a painting on. He will then working on an A2 sheet of black paper, develop a painting of a stream passage in oil pastels with figure of cavers included. He will describe the technique while relating interesting...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

HIDDEN EARTH 2025:
Dachstein Caving Expedition 2025​

The Dachstein caving expedition, active for over 50 years, explores Austria’s Alpine plateau, focusing on training new cavers and expanding cave systems like the Hirlatzhöhle. Recent discoveries and 2025 goals promise exciting developments.

Read more:

Hidden Earth 2025 | Dachstein Caving Expedition 2025

The Dachstein caving expedition has been exploring the high Alpine plateau of the Dachstein in Austria for over 50 years. It is an international expedition mostly led by cavers from the UK, Germany and Ireland but with cavers from other countries such as Poland, the Netherlands, Czechia etc. We...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
The Pig Palace and Temple Caves of Southern Thailand​

45 minute lecture by Andy Goddard

Shepton Mallett Caving Club is embarking on a 3,000km recon trip in Thailand's southern peninsular, surveying over six km of ornate Buddhist temple caves. The journey ends with the first known exploration by western cavers of the 'Pig Palace Cave'. Updates on recent finds, typical cave fauna, and a new species of cave gecko will also be shared.

Read more:

Hidden Earth 2025 | The Pig Palace and Temple Caves of Southern Thailand

Join Shepton Mallett Caving Club on a 3,000km reconnaissance journey down the southern peninsular of Thailand, surveying over six kilometres of often highly adorned Buddhist temple caves. The journey will culminate in the first recorded exploration by western cavers of 'Pig Palace Cave', an...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Tasmania: Exploration Efforts in Australia's Deepest Cave System​

30 minute lecture by Ben Honan

Australia's North Tasmania hosts highly-decorated caves filled with huge speleothems and gour pools. However, the southwest's Junee-Florentine karst system holds the exploration potential, housing Niggly cave, Australia's deepest and muddiest. Despite significant obstacles, recent exploration led by the Southern Tasmanian Caverneers revealed exciting new discoveries.

Read more:

Hidden Earth 2025 | Tasmania: Exploration Efforts in Australia's Deepest Cave System

The temperate rainforests of Australia's smallest state host caves of staggeringly different personalities. The north of the state has some of the most decorated caves in the world, filled with speleothems the size of aeroplanes, and pristine expanses of glittering gour pools. The majority of...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Buda Believers: new caves in Sarawak, Malaysia​

30 minute lecture by Louise Korsgaard

This July, an expedition heads back to Gunung Buda National Park in Sarawak, Malaysia, targeting the less-explored Northern region - Assam Hills for potential new caves. The lead comes from an ambiguous 2003 American expedition report. A notable challenge will be camping in the jungle without a nearby river. Adventure awaits and this could prove to be a major find.

Read more:

Hidden Earth 2025 | Buda Believers: new caves in Sarawak, Malaysia

In July 2025 a small team returns to Gunung Buda National Park in Sarawak, Malaysia. We will focus on finding new caves in the Northern - and less visited - part of the park also known as Assam Hills. The last American expedition in 2003 left a large going lead in Assam Hills Cave. At least so...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Resurveying and discoveries in the Coolagh River Cave: Recent UBSS Ireland expeditions​

45 minute lecture by Ash Gregg

In the past decade, the UBSS has been focusing on caving expeditions in Ireland, particularly within systems in County Clare such as the Coolagh River Cave. They've been utilizing modern surveying techniques to revise and update data, resulting in more detailed surveys and newfound discoveries. A planned talk will delve into the experiences and challenges encountered on these expeditions. The exhausting but rewarding work in the Coolagh River Cave is something not to be missed.

Read more:

Hidden Earth 2025 | Resurveying and discoveries in the Coolagh River Cave: Recent UBSS Ireland expeditions

The UBSS have been conducting caving expeditions to Ireland for many years, gathering lots of data, culminating in the publishing of a series of guide books, the latest being Caves of Mid West Ireland 2019. From 2012 to 2016 the focus of expeditions was the Cong isthmus in Co Mayo and the...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
A Year in the Void: Mulu, Meghalaya, Mexico and Crete​

60 minute lecture by Rostam Namaghi

This year has been packed with expeditions - from the immeasurable caverns in Mulu to the explosive excursions in Mexico. The key speaker will be discussing his experiences, his first year as the BCA chair and the tougher aspects of life. This won't just be about caving, but also about the stark realities that confront many of us in our daily lives. Please be aware that this conference will touch on the subject of suicide.

Read more:

Hidden Earth 2025 | A Year in the Void: Mulu, Meghalaya, Mexico and Crete

Since the last Hidden Earth I've been on 4 expeditions, completed my first year as the BCA chair, finished GP training and moved to North Wales. All while feeling paralysed by apathy for several months. Rather than give several talks I decided to overwhelm the audience with one. So please join...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Expedition Medicine​

60 minute lecture by Rostam Namaghi

This discussion promises a gripping account of medical practices under extreme conditions such as jungle surgeries, mountain hypothermias, and desert abscesses. You'll also learn valuable skills on recognising your limits, what to carry, sourcing support and crisis management. This talk is designed to equip you with necessary skills for your caving expedition, and ends with a Q&A session that provides more depth.

Read more:

Hidden Earth 2025 | Expedition Medicine

Prepare to be taken on a journey of questionable medical practice. In my usual freewheeling style I will cover surgeries in the jungle, hypothermia in the mountains and abscesses in the desert. I will promise that it will end on a more useful note; how to identify what your limits are, what to...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
ICCC Slovenia Expedition - Nova Meja​

30 minute lecture by Thurston Blount

Imperial College Caving Club has made significant progress in System Migovec, Slovenia. Utilising a large boulder chamber, they have established a camp 'Sparkle' using hammocks while retaining last year's camp 'Hallelujah' as a rest-stop/introductory camp. Interestingly, they rediscovered Salome Viados, a series of chambers which haven't been explored for nearly two decades, and there's evidence suggesting potential for a new entrance.

Read more:

Hidden Earth 2025 | ICCC Slovenia Expedition - Nova Meja

Imperial College Caving Club departed for their yearly expedition into System Migovec, Slovenia during June, returning in August. With lots of leads left open the previous year - located over 400m deeper than the current camp - a long discussion lead to the creation of a new camp (Sparkle)...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Jungles, Tin Mines, and Marble Caves: Exploring Peninsular Malaysia’s Forgotten Underground​

45 minute lecture by Joerg Dreybrodt

A caving expedition in February 2025 explored northern Peninsular Malaysia, yielding a diverse spectrum of caves, from marble ones on tropical islands to colonial-era tin mines. They surveyed more than 11 km of cave passages, with Gua Baba being the longest one at 3.5 km. This was achieved through international collaboration, including rangers, climbers, and cave enthusiasts from multiple countries. The key areas explored and future potential will be discussed at the upcoming conference.

Read more:

Hidden Earth 2025 | Jungles, Tin Mines, and Marble Caves: Exploring Peninsular Malaysia’s Forgotten Underground

In February 2025, a Malaysian-Swiss caving expedition ventured into the rarely explored karst regions of northern Peninsular Malaysia. The team uncovered a remarkable diversity of caves—from marble caves nestled on tropical islands to colonial-era tin mines reminiscent of Indiana Jones...

hidden.earth

---

Submit your session for Hidden Earth 2025
Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Matienzo Caves 2025 - the 65th Year​

45 minute lecture by Juan Corrin

In our 65th year of exploring the Matienzo Caves, we'll do more than reminiscing at this year's conference. Expect detailed discussions on our recent explorations since the last Hidden Earth, particularly our encounter with 'El Gordo' in Cueva Hoyuca that nudged the Four Valleys System beyond the 78km mark.

Read more:

Hidden Earth 2025 | Matienzo Caves 2025 - the 65th Year

There may be some reminiscing in our 65th year of exploration - but the talk will concentrate on finds made since the previous Hidden Earth, including 'El Gordo' a large chamber in Cueva Hoyuca. That space helped to take the length of the Four Valleys System to over 78km.

hidden.earth

---

Submit your session for Hidden Earth 2025
Hurry, the schedule is filling up fast! Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Writing a grant application to fund your caving expedition​

30 minute lecture by Fleur Loveridge

Want to snag some extra funding for your caving expedition? Our upcoming talk provides tips and tactics drawn from expert experiences in applying and assessing grants, primarily for the Ghar Parau Foundation. The advice given will also be relevant across other potential funders. This is a talk you won't want to miss!

Read more:

Hidden Earth 2025 | Writing a grant application to fund your caving expedition

This talk will offer hints and tips for applying for grant funding to support your caving expedition, or any other project for that matter. While framed primarily in the context of the Ghar Parau Foundation (GPF), the advice will also be relevant to other potential funders, and some ideas for...

hidden.earth

---

Submit your session for Hidden Earth 2025
Hurry, the schedule is filling up fast! Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Gower's newest cave, Ogof New Park. A 2024 film of its discovery and a science report.​

60 minute film by Andy Freem

Less than a year ago, North Gower's newest cave, Ogof New Park, was discovered, revealing an exciting 1/2 km of both challenging and unique passages. The 40-minute film documenting the cave's discovery and ongoing exploration has already been well-received by local communities. Furthermore, this new cave certainly differs from other Gower caves, sparking numerous developmental questions and increasing our understanding of the local karst area. The conference will feature a presentation explaining the scientific discoveries about Gower's geology and its glacial margin location during the late Devensian Glacial period.

Read more:

Hidden Earth 2025 | Gower's newest cave, Ogof New Park. A 2024 film of its discovery and a science report.

Until 2024, there had been very limited success in following the underground drainage of North Gower. Only a small number of caves had been found, with very little length and indications that further accessible passages exist. The digging and subsequent exploration of 1/2 km. of Ogof New Park's...

hidden.earth

---

Submit your session for Hidden Earth 2025
Hurry, the schedule is filling up fast! Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Spectacular finds as Draughting Hole and Missed Pot enter English top ten​

45 minute lecture by Fleur Loveridge

The Draughting Hole – Missed Pot system has made it to the top ten longest caves in England, currently spanning over 10km. The north west of the cave revealed well-decorated chambers as part of the 8000ers series. More updates on this project, along with a discussion on future caving prospects, will be presented at the upcoming Hidden Earth conference.

Read more:

Hidden Earth 2025 | Spectacular finds as Draughting Hole and Missed Pot enter English top ten

It’s two years since I came to Hidden Earth with tales of a new 5km long system in the northern Dales. Since then, the Draughting Hole – Missed Pot System has exceeded 10km in length, putting it in the top ten longest caves in England. This landmark followed a spectacular period of exploration...

hidden.earth

---

Submit your session for Hidden Earth 2025
Last few slots available! Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025: Return to Aquamole​

60 minute film by Keith Edwards

Don't miss the 'Return to Aquamole' screening at our upcoming conference. The film chronicles Geoff Yeadon's return to cave diving after a 26-year hiatus. It won the video salon at Hidden Earth 2024 and features the legendary Yeadon's first completion of the classic Aquamole Pot descent and cave dive. Share in this thrilling journey with over 20 other seasoned cavers and cave divers.

Read more:

Hidden Earth 2025 | Return to Aquamole

This is the story of legendary caver diver, Geoff Yeadon’s return to cave diving after being retired from it for 26 years. A 10 minute edit of Return to Aquamole won the video salon at Hidden Earth in 2024 and the complete film was premiered in the Underground Session at the Kendal Mountain...

hidden.earth

---

Submit your session for Hidden Earth 2025
Last few slots available! Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Caving in lowland Slovenia – Classic Karst​

45 minute lecture by Iain Crossley

Check out the softer side of Slovenia's caving scene. The presentation will unpack the Northern Pennine Club's exploration to the lowland karst south of Ljubljana. Don't miss the chance to learn about this fascinating destination, perfect for both Type I and Type II cavers. This sure is an exciting venture that deviates from your typical Type III caving expedition.

Read more:

Hidden Earth 2025 | Caving in lowland Slovenia – Classic Karst

Slovenia is an exciting caving destination for serious explorers of high mountain karst as demonstrated over the last 30 years by Imperial College Caving Club at ‘Sistem Migovec’. For the more faint-hearted, happily, there is another, softer, side to Slovenia, mysterious vanishing rivers, karst...

hidden.earth

---

Submit your session for Hidden Earth 2025
Last few slots available! Been on an expedition or had discovery success in the UK. Whatever you've been up to for the past few years, we'd love to hear about it. Submit your lecture, film or workshop session online... https://hidden.earth/lectures/submit

 

[HiddenEarth]

Hidden Earth 2025:
Caving in the Abode of the Clouds, Meghalaya 2025​

45 minute lecture by Simon Brooks

Now in its 33rd year, The Caving in the Abode of the Clouds Project in Meghalaya, NE India has charted 22.7kms of new passages including a new river cave named Lungchung Khur. From its inception in 1992, the project has covered an impressive total of 574km. Hear about the expedition’s ups and downs, and ponder over why 'Lucy' is often termed as a Meghalaya Caver's best friend.

Read more:

Hidden Earth 2025 | Caving in the Abode of the Clouds, Meghalaya 2025

The Caving in the Abode of the Clouds Project in Meghalaya, NE India, now in its 33rd year, saw an international team of up to 24 cavers continuing the exploration in this wonderful karst area. With an end of expedition total of 22.7kms of new passage Meghalaya continued to deliver with the...

hidden.earth

 

[HiddenEarth]

Hidden Earth 2025:
Peak District Roundup 2024 to 2025 (AKA 'Pissing around in the Peaks 2024-25')​

30 minute lecture by Simon Brooks

An update on the digging and exploration fervor in the Peak District from Oct 2024 to Aug 2025. Updates on familiar sites such as Bull Pit and P8, along with new developments in Crich and Stoney Middleton area. The demand for materials even outpaces that for bitcoins.

Read more:

Hidden Earth 2025 | Peak District Roundup 2024 to 2025 (AKA 'Pissing around in the Peaks 2024-25'

With the digging and exploration fervor in the Peak District showing no signs of abating and the demand for scaffolding and shoring materials exceeding that for bitcoins (Possibly!!!). Join us for a whistle stop tour of cave exploration and new find in the period Oct 2024 to August 2025...

hidden.earth