Valle Grande - Highway 4, New Mexico
Posted by: 
Hikenutty
N 35° 51.102 W 106° 27.316
13S E 368590 N 3968477
Quick Description: This gorgeous valley was formed 1 million years ago when a massive explosion caused a great collapse, forming a massive caldera.
Location: New Mexico, United States
Date Posted: 7/5/2010 3:16:39 PM
Waymark Code: WM96CW
Views: 7
Long Description:
The sign reads:
About 1 million years ago, the magnificent valley before you was formed by collapse, after a series of tremendouse volcanic eruptions ejected a volume of material more than 500 times greater than the May 1980 eruptions of Mt. St. Helens. This event climaxed more than 13 million years of volcanism in the Jemez Mountains. Minor volumes of magma, leaking to the surface as recently as 50,000 years ago, formed the dome-like hills between you and the skyline to the north, which is the opposite wall of the enormous Valles Caldera. The heat from young volcanism makes this area attractive for geothermal energy.
Link to History,Plaque or Sign:: [Web Link]
History:: Not listed
Additional Point: Not Listed
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