Rocky Mountain NP - pelzmann

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Lava Cliffs - Trail Ridge Road
Remnants of volcanic eruptions from the Never Summer Mountains ~ 25-29 mya
Consists of ash-flow rhyolite tuffs. The rock is made up of well formed feldspar and quartz crystals in a matrix of black or brown glass which formed during rapid cooling.

ColoradoRocky Mtn National ParkCirqueTrail Ridge Road