The study offers a new explanation for landmarks like the enormous Rainbow Bridge in Utah Geologists have discovered the secret that gives dramatic natural sandstone monuments their shape: gravity. By ...

Natural sandstone arches such as Delicate Arch, Arches National Park, USA (left panel) bear a striking resemblance to their human-made counterparts, for example, a flying buttress at Seville Cathedral ...

LITTLE ROCK, Ark (Reuters) - It's not every day that a 3-million-year-old natural sandstone bridge hits the auction block. But on Friday morning about 20 people gathered at the base of the ...

Arches National Park in eastern Utah features over 2,000 natural sandstone arches formed by erosion. Attractions include Delicate Arch, Landscape Arch, and Double Arch. Visitors can enjoy hiking, rock ...

Geologists have discovered the secret that gives dramatic natural sandstone monuments their shape: gravity. By studying cubes of sand in the lab, they showed that areas squeezed by vertical stress are ...