Natural bridges are rock formations shaped by geological activity over millions of years. Let's take a look at some of these stunning natural structures. Pont d'Arc, FranceA popular tourist attraction ...

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 ...

Leif Ristroph, a physicist and applied mathematician at New York University, was conducting experiments on how clay erodes in response to flowing water when he noticed tiny shapes emerging that ...