Geology

These ancient giraffes are the largest known animal petroglyphs in the world.

Rainbow-hued in the summer and crystalline in the winter, this salty lake has inspired battles, temples, and plenty of awe.

A natural dome made of volcanic glass in Inyo National Forest.

Indigenous cultures believed all life would end if this enormous rock toppled.

Thousands of glyphs created by an unknown culture decorate the rock formations of this canyon.

Tour the inside of a massive lava tube formed during a 1949 volcanic eruption.

Squeezing inside this deep, narrow canyon reveals a festival of desert colors.

The largest and most well-preserved petroglyph site in the Verde Valley.

Its collection highlights the monumental tasks undertaken to map Queensland.

The 7,000-year-old calcium carbonate formation creates a magnificent natural bridge.

The tallest mountain in mainland Netherlands isn't actually very tall.

Mysterious heaps of stones dot these otherworldly woods.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

This bird-shaped rock formation defies gravity, time, and classification.