A tumulus near the Chain of Craters Road - Volcanoes National Park, Big Island, Hawaii, USA
A tumulus near the Chain of Craters Road - Volcanoes National Park, Big Island, Hawaii, USA. On flat or gentle slopes, the surfaces of pahoehoe flows are sometimes marked by elliptical domed structures, from 2 to 10 meters high, called tumuli. A tumulus develops when slow-moving lava beneath a solidified crust wells upward. The brittle crust usually buckles to accommodate the inflating core of the flow, thus creating a central crack along the length of the tumulus.
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Photo credit: © Laszlo Podor / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: america, basaltic, big, bizarre, cloudy, crack, environment, eruption, flow, forms, geological, geology, hawaii, hazard, island, kilauea, lava, national, nature, ocean, pacific, pahoehoe, park, shape, shapes, shield, states, tropical, tumuli, tumulus, united, usa, volcanic, volcano, volcanos, āhoehoe
