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Pinnacles eroded from Tertiary-age lava flow breccia along State Route 20, Garfield County.

POTD April 12, 2016: State Route 20, Garfield County, Utah

POTD 4-12-16 lava flow Garfield County

State Route 20, Garfield County, Utah
Photographer: Bob Biek; © 2015

Pinnacles eroded from Tertiary-age lava flow breccia along State Route 20, Garfield County.