At one time, there were also natural gas and oil deposits in the area.

To the north there's a subterranean lake with More water than the oil deposits to the south.

The region is rich in natural gas, and there are oil deposits of uncertain size.

But now most of the world's largest oil deposits lie under poor countries with little political accountability.

The area has some of the biggest oil deposits in the world.

It has one of the highest oil deposits in the world.

Another major appeal has been the prospect of finding huge oil deposits.

Very large gas and oil deposits have been discovered in this region.

At the end of 1943, large crude oil deposits were discovered.

A preliminary assessment suggests that the area may have significant oil deposits.