Unrecognized, hidden and millennia-old subterranean worlds lie - TopicsExpress



          

Unrecognized, hidden and millennia-old subterranean worlds lie under the surface of our planet. We know only a very small part of this world, located below our feet but the majority of it is so far untouched, unseen and unexplored by a modern man. There is an underground world of never ending tunnels and massive caves dug by ancient men we know nothing about. These tunnels connect cities that are located almost entirely beneath the earths surface.
Posted on: Tue, 22 Jul 2014 06:33:07 +0000

Trending Topics



Recently Viewed Topics




© 2015