The pair of massive sinkholes that continue to swallow up the popular lookout at Cape Kiwanda State Natural Area may one day form a new sea stack, a report recently completed by Oregon Department ...

Giant mounds of sand discovered beneath the North Sea off Norway may scramble what we know about a key geological process.

The red sandstone stack of the Old Man of Hoy is a joy to behold from a hike along the cliffs. It’s one of the UK’s highest rock stacks and soars 137m above the sea, but be quick – he’s approaching ...

Orkney’s legendary Old Man of Hoy is Britain’s tallest sea stack and stands at an imposing 137 metres above sea level. In geological terms, it is relatively young and maps indicate it was ...

The Bako sea stack is the second well-known rock formation in Sarawak to collapse in recent years. On Feb 20, 2020, the “horse head” cliff at Tusan beach in Miri collapsed, believed to be due ...

Darwin’s Arch, a rock formation south-east of Darwin Island in the Galápagos archipelago, which lies 600 miles (1,000 km) off South America in the Pacific Ocean, has collapsed due to natural ...

The surviving sea stack was about 15-20 feet high and about 8 feet in diameter, interpretive naturalist Karl Mead at Tettegouche State Park told MPR. Credit: Kurt Mead.

Archaeologists uncovered the fort on top of the 20-foot-high Dunnicaer sea stack (pictured) near Stonehaven, Aberdeenshire. It may have been one of a line of forts along the coast.

A seven-year-old boy from America has successfully climbed the Old Man of Hoy, off the coast of Orkney. Cody Weishaar scaled the 449ft (137m) sea stack with his father and three of his friends in ...

A seven-year-old boy from America has successfully climbed the Old Man of Hoy, off the coast of Orkney. Cody Weishaar scaled the 449ft (137m) sea stack with his father and three of his friends in ...