Lovers of all things geology will appreciate these strange and beautiful cannonball concretions; a North Dakota classic that'll leave you scratching your head.

This cave on a hillside near Tarbox Pond may have been a winter shelter for the Narragansetts. Find out why it's also known as "Witch's Cave." ...

Beneath the Earth’s surface lies a world so extreme and isolated that it seems more like an alien planet than part of our own ...

From strange caves to spectacular rock structures, the unexplored caves and the geological marvels around Bengaluru tell a fascinating story about the Earth's history. Here's a journey through ...