I have decided to put a lock on the entrance to the cave. The staff and rangers clearly have no interest in it and I am worried that someone else will get it. Ted Wilson seems to have had a lock on it for a year and possibly two without any one noticing, so I should be OK. It is a shame that I can only come on the weekends.
Today I took a few pictures of some of the objects inside. I am contemplating cataloguing them.