Virtual Cave
FEATURE
Tube-in-Tube
Tube-in-Tube
CAVE TYPE
Lava Tube
Lava Tube
Tube-in-Tube
HOME / VIRTUAL CAVE / SOLUTIONAL CAVE / Tube-in-Tube
As a lava stream moves along the floor of an existing tube, it may form an insulating crust, just as occurs on the surface to form lava tubes. In fact, small tubes such as these are also common on surface pahoehoe lava flows.
AUTHOR: Dave Bunnell