Giant's Causeway in Northern Ireland formed ~60 million years ago from cooling lava. The Wave in Arizona, USA, is Navajo Sandstone from the Jurassic period. Moeraki Boulders in New Zealand formed ~60 ...
The Devils Tower rock formation in Wyoming is made of a rare type of rock eroded over millions of years, not the remains of an ancient tree stump, as social media users are suggesting anew. Reuters ...
The American West is world-famous for its distinctive landscapes and unique geological formations. Much of the West consists ...
Gentle, artificial light bounces off natural columns, bobbles, spikes and folds of rock embraced in the heart of the Luray Caverns in the Shenandoah Valley. The expansive yet intricate caverns, a U.S.