1. Sara Moussa & Valentina Uribe

2. The Yellowstone Caldera is a supervolcano located in Yellowstone National Park in the United States, in the northwest of the United States. Yellowstone National Park covers 3,472 square miles. Even though the official address is to the state of Wyoming, Yellowstone is actually in three states. The majority of the Park (96%) is in Wyoming. A small section of the Park (3%) to the north and northwest is in Montana. And a small section of the Park (1%) to the west is in Idaho.

3.  Latitude: 44.615° N  Longitude: 110.6° W  Elevation: 2,805 (m) 9,203 (f)  Volcano type: Caldera  Composition: basalt to rhyolite  Yellowstone National Park has been designated as one of the Seven Natural Wonders of North America. It is a truly unique place with many of its features having the distinction of being the most, the longest, the largest.  See more features at: http://www.yellowstonepark.com/natural-wonders/http://www.yellowstonepark.com/natural-wonders/

4.  The last time the Yellowstone supervolcano erupted was 640,000+ years ago. The Yellowstone eruption area collapsed upon itself, creating a sunken giant crater or caldera 1,500 square miles in area.  Over the past 2.1 million years Yellowstone volcano has had three immense explosive volcanic eruptions that blanketed parts of the North American continent with ash and debris.

5.  http://volcanoes.usgs.gov/observatories/yvo/ http://volcanoes.usgs.gov/observatories/yvo/  http://www.yellowstonepark.com/ http://www.yellowstonepark.com/