'At 3 1/2 million square miles, this largest desert could just about cover the United States'
Sahara
A REALLY BIG CATEGORY: At 3 1/2 million square miles, this largest desert could just about cover the United States
At 3 1/2 million square miles, this largest desert could just about cover the United States
At 3 1/2 million square miles, this largest desert could just about cover the United States
A REALLY BIG CATEGORY
Sahara
A REALLY BIG CATEGORY