'The 200,000-square-mile Libyan Erg is the largest area of sand dunes in this desert'
Sahara
TOUGH GEOGRAPHY: The 200,000-square-mile Libyan Erg is the largest area of sand dunes in this desert
The 200,000-square-mile Libyan Erg is the largest area of sand dunes in this desert
The 200,000-square-mile Libyan Erg is the largest area of sand dunes in this desert
TOUGH GEOGRAPHY
Sahara
TOUGH GEOGRAPHY