When the less resistant rock is eroded away to form a plain, the more resistant rock is left behind as an isolated mountain.

The Trikala and Larissa lowlands form a central plain which is surrounded by ring of mountains.

New mountain sediments formed a vast alluvial plain.

The land underwent a series of uplifts to form a fertile plain.

Instead, the western states formed a vast plain, cut through with rivers and streams.

The level interior of Albategnius forms a walled plain, surrounded by the high, terraced rim.

Instead, nearly three-quarters of its land formed a rolling plain - ideal for planting crops.

Eventually this sea dried up, forming a wide plain upon which the Nahanni River first took its course.

They were walking over yellowish calcinated earth, forming a plain of nearly a mile long, which extended to the edge of the wood.

The northern part of the island forms a lowland plain that comprises some two thirds of the surface area.