The desert rat-kangaroo (Caloprymnus campestris), a small, hopping marsupial believed to be extinct since 1994, may still be hiding in the vast and harsh Sturt Stony Desert of Australia.

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 ...