Fall color covers the forested slopes of Bieszczady National Park, while patches of polonina, a type of high-mountain meadow, have turned tan.

If the thought of extraterrestrial objects crashing into Earth weren’t creepy enough, behold Australia’s Spider Crater.

A new map of the terrain beneath the Greenland Ice Sheet links hundreds of valleys that previous maps missed or left fragmented.

Mexico’s second-largest metropolitan area borders on folded rock layers of the Sierra Madre Oriental.

Layers of sedimentary rock that jut from the Soledad Basin at surprising angles have long enthralled television and film producers, including the team behind Star Trek.

The ocean’s ebbs and flows reveal dynamic tidal flats and a well-traveled shipping route along the coast of Germany.

Snow-capped mountains carved by deep river valleys preside over northwestern Washington state.
Differences in the underlying bedrock and how rivers distribute sediment make the coastlines west of Portland look unlike those northeast of the city.

The hills and basins of Seattle, Washington, have been sculpted by glaciers and modified by humans.

Sediment eroded from ice-capped mountains splays out across a broad river valley on Russia’s Severny Island.