Geology

A huge collection of rocks, gems, and crystals.

A modern Nordic Pompeii on the Icelandic island of Heimaey.

It would take 35 firetrucks to fill this enormous glacial pothole.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Otherworldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

Etchings in a pile of boulders on the Long Island Sound are a monument to vanquished native peoples.

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

The boulder on which Alexander Hamilton laid his head after a deadly duel can still be visited on the New Jersey coast.

This heart-shaped island looks substantially less lovely after a recent bulldozing project.

One woman's lifelong collection is on display in this unassuming house on an Icelandic fjord.

A hugely vast Irish landscape of barren rock that stretches for miles.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

At high tide, the base of the lighthouse covers practically every inch of the island.