The world's largest crystal cave (Pulpi Geode, Spain)
BBC, Travel, July 22, 2022
[www.bbc.com]

Inside the world's largest crystal 'cave' (Spain)
BBC News, April 13, 2022
[www.bbc.com]-

The World's Largest Geode Formed When the Mediterranean
Sea Disappeared, New Study Reveals, Brandon Specktor,
LIve Science, October 18, 2019
[www.livescience.com]

Crystal Cave Ohio – Another geode

Crystal Cave Ohio – Another geode
[putinbay.com]

Crystal Cave - The World's Largest Geode (Ohio)
Crystal Cave is located in Put-in-Bay, Ohio,
South Bass Island in Lake Erie
[heinemanswinery.com]

YouTube video of Crystal Cave, Ohio
[www.youtube.com]

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)