Caving—also known as potholing in the United Kingdom—exploring wild cave systems. In contrast, speleology is the scientific study of caves and the cave environment.
Clay Perry, an American caver of the 1940s, wrote about a group of men and boys who explored and studied caves throughout New England. This group referred to themselves asspelunkers. This is regarded as the first use of the word in American. He has written a book, where he has described a nature of caves, his helpful friends and some most interesting facts from his life – his expedition.
Helmet. Important part of equipment. A helmet should have an halogen lamps. Mask. In the caves there are a lot of stones, so you need it. Costume.