The plains around Colac are the third largest volcanic plain in the world.

The town is based at the foot of a mount, as are many towns across the volcanic plains.

Several older buildings are constructed in bluestone, plentiful in the surrounding volcanic plains.

In the next few days they crossed the volcanic plains north and west of Melbourne.

They'd landed on a volcanic plain, patterned in grays and greens by lichen.

He turned and ran after it/her onto a drift-swept volcanic plain.

The airfield is located in the rolling volcanic plains of western Victoria.

The planet is covered by volcanic plains and highland plateaus.

We go north until we hit the volcanic plain.

Melton is located on flat, largely featureless, former volcanic plains.