As the dry desert landscape cools and heats during the day and night, the rock expands and cracks. Over thousands or millions of years, aided by wind whipping at the smaller stones, the rocks are ...

As the dry desert landscape cools and heats during the day and night, the rock expands and cracks. Over thousands or millions of years, aided by wind whipping at the smaller stones, the rocks are ...

The parched desert and hillsides made an inviting canvas: By simply removing a layer of dark stones cluttering the ground, exposing the lighter sand beneath, the Nasca created markings that have ...

The ridges are known as kaluts. In the Lut Desert some are up to 155 m high and their ridges can be followed for more than 40 km. The wind also strips hard rocky outcrops bare of soil, which leaves ...

THE manner of formation of the famous Nubian sand-stone has been a matter for controversy for a century. This may be partly attributed to its wide geographical distribution (extending over 30° of ...

The stone artifacts date back 80,000 years, around the time when hospitable conditions were ending in the Arabian Desert.