Lava bed

A lava bed or lava field is a large expanse of nearly flat-lying lava flows. Such features are generally composed of highly fluid basalt lava, and can extend for tens or even hundreds of miles across the underlying terrain. The extent of large lava fields is most readily grasped from the air or in satellite photos, where their typically dark, nearly black color contrasts sharply with the rest of the landscape.

A lava bed that was located close to the New Mexico/Texas border, was shown on a map on the Justice League Monitor.