Yellowstone Volcano - Yellowstone National Park, Wyoming
Posted by: Groundspeak Regular Member Big B Bob
N 44° 25.800 W 110° 40.200
12T E 526265 N 4919686
The Ultimate Super Volcano!
Waymark Code: WM7NE1
Location: Wyoming, United States
Date Posted: 11/13/2009
Published By:Groundspeak Charter Member konagold
Views: 67
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From Discovery Channel: (visit link)

Yellowstone National Park sits atop a subterranean chamber of molten rock and gasses so vast that the region, known for its geysers and grizzlies, is arguably one of the largest active volcanoes in the world.

Granted, it's not your typical volcano, either in scale (it's huge), appearance (it's a vast depression, not a single mountain) or frequency of eruption (at least hundreds of thousands of years apart).

But it is active, and the evidence is everywhere.

A relatively close-to-the-surface magma chamber — as close as 5 miles underground in some spots — fuels thousands of spewing geysers, hissing steam vents, gurgling mud pots and steaming hot springs that help make Yellowstone such an otherworldly and popular tourist attraction, with 3 million summer visitors.

For more information (visit link) for the Yellowstone Volcano Observatory.
Volcano Type: Composite Volcano or Stratovolcano

Volcano Location: Continental (subduction zone)

Year of most recent activity: 2009

Caldera Visible?: yes

Cone Visible?: no

Crater Visible?: no

Geyser/Hot Spring Visible?: yes

Lava Dome Visible?: no

Lava Flow (Moving) Visible?: no

Lava Flow (Not Moving) Visible?: no

Vent or Fumarole Visible?: yes
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