sandstone arches

Erosion-carved rock spans

Sandstone arches are natural rock formations where erosion has carved an opening through a fin or wall of sandstone, leaving a curved span of rock overhead.

They form over millions of years as water, ice, and wind wear away softer rock while harder layers remain.

Arches National Park in Utah contains over two thousand such formations.

The sandstone arches glowed orange at sunset.

Related

park ranger · natural bridges · weathering · iron oxide · erosion · quartz · rock shelters · freeze-thaw cycles · artistic inspiration · exfoliation · cultural heritage sites · geological surveys · conservation projects · feldspar · river valleys · hiking destinations · national parks · sedimentation

Opposites
formation origin

sandstone archesconcrete bridges

Spans built from cement

steel bridges · suspension bridges · Roman aqueducts · viaducts · stone bridges

geological composition

sandstone archesbasalt columns

Prismatic volcanic rock formations

lava tubes

structural form

sandstone archesmonoliths

Large single-stone structures

mesas · granite domes · cliff faces · buttes · boulder fields

Family

sand, stone, arch, sands, stones, arches, sandy, sandier, sandiest

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Positive · Everyday, not technical · Rated G