aa flow
A lava flow with a surface typified by angular, jagged blocks, spinose, clinkery surface. Contrast with pahoehoe flow. An expletive of pain when walking barefoot on such lava.
A lava flow with a surface typified by angular, jagged blocks, spinose, clinkery surface. Contrast with pahoehoe flow. An expletive of pain when walking barefoot on such lava.