Eeee it's a strange world. After the conversation with no.4 last night, I dug out my old caving logs and did a search on some US names that I'd caved with. The first result for one person was his recent request on a forum to find me following a working trip to Montana in 1982 which prompted me to take my gear and get in some time underground. One weekend we found a reasonable amount of virgin cave but the system was only fully surveyed a couple of years ago. It transpires I had an underground lake named after me as the finder 32 years ago. Who would have thought it? I haven't looked at the logs for over 20 years, which makes the timing a bit spooky.