3 ms·

Here's an article on one such underground site: https://www.nature.com/articles/nature18291 https://www.nature.com/articles/nature18291 The tunnels themselves

by nukeop 8y ago

Here's an article on one such underground site: https://www.nature.com/articles/nature18291 https://www.nature.com/articles/nature18291 The tunnels themselves were not that long or linked up, but apparently all those that were found under Europe add up to hundreds of kilometers.

amvalo 8y ago
What do you mean by the word "tunnel" here? They seem to be talking about an arrangement of stones on a cave floor.