dune

At Monte Clérigo, researchers identified 5 trackways and 26 individual footprints created by adults and by children slightly over a year old on the slope of what was once a coastal dune.

The geese spent a few days hopping from island to island, munching on dune grass and resting their wings.

Scientists at the University of California, Davis report the discovery of a previously unrecognized trapdoor spider that lives in California's coastal sand dunes.

Environmentalists warn that development projects threaten the region's unique mix of dunes, pine forests, gnarled cork trees and an endless patchwork of rice fields.

During the Martian winter, when temperatures plunge to around minus 120 degrees Celsius, ice accumulates on the dunes.