I went to IU in the late 70s. My friends and I went to just about all of the caves of the Garrison Chapel Valley: Wayne’s Lost, Grotto, Coons, Buckner’s, Ellers... Up until a few years ago I still had the book of cave maps. I hear most of them are now closed to the public. We spent about ten hours in Wayne’s and that wasn’t half of what you could explore.
No way we would ever have left someone behind.
I was surprised by Sullivan's cave having a gate. Although in this day & age I shouldn't be. Last time I was there, no gates.
I don't remember how long we were in Waynes cave but I think we were all dreading the torpedo tube return. So, we delayed the trip out.
Do you know the name of that cave of that I spoke of in my post, where kids have drown? In I might have misremembered it as Spencer's cave.
It was in 1976-1978 time frame when those kids I spoke of died.