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This is a satellite image of the Dasht-e Lut salt desert in southeast Iran. It is widely regarded as the hottest place on Earth.

The highest land surface temperature ever recorded from space was in the Lut Desert back in 2005. It reached a staggering 70.7ºC. The ESA explains the image you're looking at:
The light area in the centre of the image are the long, parallel wind-carved ridges and furrows. The darker area to the east is an extent of massive sand dunes, some reaching up to 300 m tall. In the upper-right section we can see a light green, shallow body of water that straddles Iran’s border with Afghanistan... In the lower-left we can see the white, snow-capped Jebal Barez mountains.
[ESA]