A lava flow is a stream of molten rock that flows out of a volcanic vent. When thick lava cools evenly and slowly, it contracts and develops vertical cracks (columnar joints). This process produces a tiled surface and a pillared cross-section. Extreme climate temperatures break the hardened lava into smaller rocks, then into iron-rich sand (see Metal Deposits). Because molten lava can spread thinly over large areas, it is not always near the volcanic vent it originated from.
Common in the Basalt Desert of northern Jordan. Also found in Wadi Hidan at the GPS coordinates: 31.5065°, 35.6863°.