Roko's basilisk: https://en.wikipedia.org/wiki/Roko's_basilisk

I think that mylar encapsulation differs from lamination as demonstrated in the videos linked by Leclused in an important detail: that the mylar does not adhere to the paper, the point being that if, at some point in the future there is a reason to remove the map from the encapsulation, it can...

Several major libraries and national archives publish guidelines on document conservation which may be of some use, for example: https://www.loc.gov/preservation/care/paper.html Library of Congress Care, Handling, and Storage of Works on Paper - which advises against using adhesive tape. I...

There's an article in an old edition of Nylon Highway that describes something similar: Climbing Treadmill by Pete Sauvigne, NH35 p6 I'm sure I've seen another article somewhere (that I can't immediately locate) which shows a setup using a rack as the friction device and with a different...

Another perhaps less-well known resource provided by BCA is the Cave Registry Data Archive: http://cave-registry.org.uk/

There's a good account of this adventure - with lots of pictures - here: https://earbypotholeclub.co.uk/?page_id=719

High Tea: Pour tea into a mug while raising the pot higher and higher above the mug. The Footprint Game: Run at a wall and then leap up and leave a footprint as high as possible.

They're in good hands, being maintained by Paul Burger: https://cave-exploring.com/index.php/long-and-deep-caves-of-the-world/

Another unique character gone. I only met Arthur a few times. One was when he appeared at an otherwise deserted Whitewalls minutes after my group, which had been trapped for 17 hours at The Restaurant by flood waters, arrived back at the hut. Arthur had noted we were overdue, must have had a...

https://www.treebuzz.com/forum/threads/climbing-treadmill.11504/ Found it... sort of! All of the text is there, but the diagrams are only shown as thumbnails, which require a login to view full-size.

Sauvigne, Pete (1992) Climbing Treadmill. Nylon Highway #35, p6. This article, which gives detailed instructions on how to make a rope-climbing treadmill with a continuous loop of rope, certainly used to be online somewhere, but I am now unable to find it.

To add yet another example to this dolorous topic, a memorial stone for M?lissa Lagr?de was placed at the entrance of the cave in which she died, in Banqiao, Hubei, China, in 2009 (Source...

Yochib: The River Cave, by William C. Steele A somewhat obscure book that deserves to be more widely read. Outrageous, nerve-wracking caving in an extremely flood-prone Mexican stream sink in the 1970s. Includes an utterly terrifying account of being caught in a flood, and an heroic rescue by...

This may be of interest: http://cucc.survex.com/jnl/1982/crutch.htm Its a design for a harness made from webbing and buckles, with no stitching. Lots of tedious feeding of webbing through buckles needed to put it together and adjust it! You'd just need to obtain some appropriate webbing and...

I expect you've already thought along these lines, but as a form of experimental control it might be a good idea for the diver who deploys the dye to carry a detector (i.e. bag of charcoal) with them for the whole dive. This could then be analysed later to show whether contamination may have...

As an aside, on the topic of keeping drills dry, an American company, Swaygo, makes extremely durable bags that are something of a cross between a drybag and a tacklesack - they're designed to be tough enough to drag through a cave, but have a watertight seal like a drybag. There are 3 sizes...

My preferred setup is a shortened ring spanner on a very short bungy cord with a loop round my right wrist - the cord is just long enough that the spanner can hang down into a potition where it can be gripped by my right hand. When not in use the spanner sits inside the elasticated cuff of my...

According to the file survex.mime, they are: application/x-survex-svx application/x-survex-3d

The Austrian Verein f?r H?hlenkunde in Obersteier, among others, have visited Namibia. Some info and references in German here.

Click on 'LEGEND' in the menu top right (where it says 'BUY MAP') and all is explained. The map is coloured to indicate mean wind speed, which appears to be pretty close to 8ms-1 for most of the country; pan over to the west coast and there are some red bits!