I am a desert known for its unique 'fairy circles' and diverse wildlife, including the desert-adapted elephant. My temperatures can fluctuate dramatically between day and night, and I experience frequent coastal fogs that provide moisture. I am not the Sahara.

1. My name is derived from a specific group of people.
2. I am considered to be one of the oldest deserts in the world.
3. Diamonds have been found in some of my coastal areas.
4. I am primarily located in parts of southwestern Africa.