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.
Apollo astronauts previewed their roles as lunar field geologists in Alaska’s Valley of Ten Thousand Smokes.
The Nebraska Sandhills—the largest system of sand dunes in the Western Hemisphere—stretch across about one-quarter of the state.
From a geothermal hotspot to the one-time “Lighthouse of the Pacific,” the heat is on beneath the volcanic landscape of western El Salvador.
Scientists relied on satellite data to understand how the Antarctic glacier lost so much ice so rapidly.
The coastal province features striking tropical karst landscapes and sandy beaches alongside a mix of natural land cover and developed areas.
The circular geologic feature in northwestern Africa can be hard to recognize from the ground, but it is obvious when viewed from space.