18 mayo 2015
An unusual and unexpected discovery: on the floor of Lake Neuchatel, geologists have happened upon huge underwater craters — some of the largest in the world to be found in lakes. They are not volcanic in origin, but were caused instead by giant freshwater springs.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/tgpkHGt53oc/150518102140.htm
