Sahara Desert

The Sahara Desert was a desert located in North Africa.

It was the largest desert on Earth, bordering the Atlantic Ocean in the west, the Red Sea in the east, and the Mediterranean Sea and Atlas Mountains in the north. (AUDIO: The Sands of Life)

History
The Eleventh Doctor and Clara Oswald were caught in a sandstorm in the Sahara which had been created by an alien camel. (COMIC: Sandblasted)

In 1941, the Twelfth Doctor and Clara visited the Sahara Desert. (COMIC: The Instruments of War)

Jean and Harry visited the Sahara prior to 2009. (COMIC: The Widow's Curse)

In 2020, during the human-Silurian negotiations, the Sahara Desert was suggested as a possible place for the Silurians to live. (TV: Cold Blood)

Other references
The Tenth Doctor described the Tandocca Scale as infinitely small, like finding a speck of cinnamon in the Sahara. (TV: The Stolen Earth)

He also described the planet Quompipping as being sunny as the Sahara. (COMIC: Laundro-Room of Doom)