USA, Ohio, Put-in-Bay, Heineman Winery Crystal Cave

[Frank de Wit]

Heineman Winery Crystal Cave / Celestite cave
https://heinemanswinery.com/crystalcave.asp
http://www.heinemanswinery.com/crystal_cave.cfm

Crystal Cave - The World's Largest Geode ;)
See celestine crystals up to 3 feet in width! Discovered by workers in 1897 while digging a well for the winery 40 feet above, Crystal Cave is the world's largest geode. The walls of this cave are covered in strontium sulfate, a blueish mineral called celestite. These crystals range from 8 to 18 inches long. The original cave was much smaller than what appears today, as crystals were harvested and sold for the manufacturing of fireworks.

978 Catawba Street, Put-in-Bay, South Bass Island, Ohio 43456, USA

Also see:
http://www.mindat.org/mesg-6-285037.html
http://www.flickr.com/photos/38358971@N03/3590008972