LEGACY - Surface Tube - Deschutes County, Oregon
Posted by: 
Volcanoguy
N 43° 54.832 W 121° 21.440
10T E 631890 N 4863617
Former geology marker along Trail of the Molten Land. Sign was removed in late 2011.
Waymark Code: WM1BJ3
Location: Oregon, United States
Date Posted: 03/25/2007
Views: 29
This sign was located on the Trail of the Molten Land. In 2011, to meet current ADA requirements the Trail of the Molten Lands had to be rerouted and signs replaced. New signs were designed which are more colorful but in many cases less informative than they could have been.
Marker Name: Surface Tube
Marker Text: Great floods of lava gushed out of a breach of Lava Butte and past this point many times. During the final stages of eruption, only a trickle of lava flowed down a small channel. A surface tube was formed when the lava cooled and crusted over. The interior remained molten, allowing lava to surge and spurt through many times. Notice that the tube has collapsed in places where the roof was thin.
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