“I don't take a lot with me when I go cave exploring,” she said. “And I do go quite often. And I do go quite deep. It's because I always manage to find something there. Not something material, but a feeling. It's hard to explain. Like Mother Earth herself holds you in a very tight embrace. Like she's squeezing you back inside the place you came from. And above all, there's of course the thrill. The thrill of knowing that you might no longer be able to get out of there. Ever. I love that. It's like the opposite of claustrophobia. I get aroused by feeling trapped. Squeezed. About to have the air squeezed from my lungs.” And there was no one, not her parents, not her friends or the strangers she spoke to over the internet. No one who could convince her that on her last trip she didn't…