Point taken. However, it is a small, obscure cave well off the beaten track that tends only to get visited by organised groups. Don't get me wrong I have nothing against parties visiting caves. I am an Outdoor Pursuits Instructor at a local College and regularly take groups caving. I am slightly surprised that the majority of replies have focused on my unintended slur on outdoor centres as oppposed to the issue of litter. I always try to leave caves, crags, mountains etc. a little bit cleaner than when I turned-up by packing out any trash I might find. I also try to educate the people I introduce to these special places to do the same; not always an easy task. My original post was I suppose intended to embarrass who ever decided to leave a trail of tealights in a cave in to not doing it again. You never know they might read this forum.