does anyone know the name of the book and/or video that described the connection trip between the Flint Ridge and Mammoth systems? I recall it from several years ago, but now the whole thing eludes me. Was it just a National Geographic special?
Speaking of National Geographics... I used to have an issue that featured caving from waaaay back in the 60s that I looked at so much as a kid it went to tatters and disintigrated. Is it possible to get reprints? I would love to see that old issue again. Correct me if I am wrong, but it seems like this very issue had an article describing the tragedy of the USS Thresher.