Disclaimer: I'm no Danish teaching expert, I just happen to be an Icelander who was forced to learn Danish as my second language - and although I always got very good grades in Danish, I was never good in Danish: can't speak it, can't understand a Dane - I can maybe read it a little bit...
University of Utah geology and geophysics professor Fan-Chi Lin said the blob-shaped lower magma reservoir in Earth's lower crust is located 12 to 28 miles (20-45 km) under Yellowstone, with a volume of 11,500 cubic miles (46,000 cubic km), or 11.2 times the volume of Arizona's Grand Canyon.
Yellowstone volcano is composed of an immense volcanic crater â known as a caldera â more more than 70km (44 miles) in length, most of which lies within Yellowstone National Park. The volcano rarely erupts lava (it last did so about 70,000 years ago, but the magma lying beneath the surface gives rise to spectacular geothermal features, such as geysers and colourful hot springs.