The sand formations in southern Arabia.

The sand formations within the bedding display a 'lens-like' shape, giving the pattern its respected name.

Further research disclosed that pumping out sand opened "wormholes" in the sand formation which allowed more oil to reach the wellbore.

The Navesink Formation is a 66 to 70 mya greensand glauconitic marl and sand geological formation in New Jersey.

It's no wonder people call these giant sand formations lifelike.

It has various stone and sand formations which have been carved by wind and water.

They say they need nothing more than sand formations, rocks or the stars to find an invisible track, a lone tent - or smugglers.

"I wonder how the effect is achieved," Grey said, striding across to touch the sand formation.

At the base of the sand formation, the drum struck a rock and sent out another reverberating sound.

The well confirmed the eastern extension of the field and also the hydrocarbon contacts seen in both sand formations in the initial discovery.