I'm always looking for caves that are for sale. Spotted this tube listing recently:
http://www.landwatch.com/Hawaii-County-Hawaii-Land-for-sale/pid/284341096
http://www.landwatch.com/Hawaii-County-Hawaii-Land-for-sale/pid/284341096

Anjana Khatwa, award winning presenter and writer: "The Whispers of Rock: Stories from the Earth". Vince Simmonds, archeologist and cave explorer: "Echoes of the Ice Age: A Pleistocene Record from Mendip Cave Deposits" Of particular interest will be the recent find, the Woolly Rhino Skull that is now in Wells Museum. Owen Dukes - Geologist (Tarmac) "Mendip Mineral Resources"