The appearance and vanishing of this natural occurrence in Great Sand Dunes National Park is worth booking a trip to see.

(AP Photo/Julio Cortez) A sand dune is backdropped by Atlas Energy plant at the beginning of a 42-mile conveyor belt that ...

The Lut sand-seas are amongst the best developed active dune fields in the world, displaying a wide variety of dune types (crescentic ridges, star dunes, complex linear dunes, funnel-shaped dunes) ...

A star dune is a type of sand dune that has at least three ridges coming from a central peak, which gives it a star-like shape when viewed from above, according to NASA's Earth Observatory.

Sea-level rise is threatening San Francisco’s shores. In February, the city began vegetating the sand dunes as part of its ...

Scientists have long questioned whether the ridges might represent the remnants ... “The structures don’t look like sand dunes,” Manga said. “They don’t look like an impact crater.

Study by UCSB marine scientists demonstrates the ability of natural dune formations at Santa Monica Beach to withstand more ...