Apr. 04, 2012 - 300 Speleologists Meet In Paris: 300 Speleologists from 22 nations are gathered in Paris for their first congress which will take place in the Museum of Natural History!. From left to right, Norbert Casteret, Robert De Joly (President of the Speleologist club in France) and Pierre Chevalier Explorator!, displaying a small scaled model!

- Image ID: E144KH
Keystone Press / Alamy Stock Photo
Image ID: E144KH
Apr. 04, 2012 - 300 Speleologists Meet In Paris: 300 Speleologists from 22 nations are gathered in Paris for their first congress which will take place in the Museum of Natural History!. From left to right, Norbert Casteret, Robert De Joly (President of the Speleologist club in France) and Pierre Chevalier Explorator!, displaying a small scaled model! (Credit Image: Keystone Pictures USA/ZUMAPRESS)