The Ubari Sand Sea is a vast area of towering sand dunes in the Fezzan region of south-western Libya.
But 200,000 years ago, this was a wet and fertile region with plenty of rainfall and flowing rivers.
During humid periods the lake reached a maximum size of 120,000 square kilometers.
Oum al-Maa Lake, Ubari Sand Sea.
Located besides the ruins of the old village, Gaberoun is the one tourists mostly visit.
These are, however, rarely visited by tourists.
The Ubari lakes are very salty.
This has caused the dissolved minerals in the lake waters to become concentrated.
Some of these lakes are nearly five times saltier than seawater.
Some take on blood-red hue from the presence of salt-tolerant algae.
Oum al-Maa Lake.Photo credit
Oum al-Maa Lake.
