Set in a 738 acre Denver Mountain Park, Red Rocks Amphitheatre is no ordinary stage — it’s also a geological wonder. Discover ...

Minerals are typically formed when molten rock, or magma, cools, or by separating out of mineral-rich water, such as that in underground caverns. In general, mineral particles are small ...

Fiery rock can do that to a man ... Bryce and Arches are two of the roughly 30 parks and other national preserves that make the heart of the province one of the nation's most protected regions.

The new Argentine dino might give us clues to what the world was like before the asteroid wiped out their kind.

struggles under the weight of a rocket at the Tripoli Rocketry Association’s major annual launch in the Black Rock Desert. This story appears in the September 2018 issue of National Geographic ...

Sandbars swirl beneath Oregon Inlet in Cape Hatteras National Seashore on North ... and buff Earth's rock into ever evolving works of art—and then wash the remains into the sea.

The next layer is the mantle. Many people think of this as lava, but it's actually rock. The rock is so hot, however, that it flows under pressure, like road tar. This creates very slow-moving ...