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.
The volcano's magma forms deep in the Earth's mantle, the layer between the planet's crust and its core. The magma, which is fluid molten rock, then flows upwards to a pool about five miles (8 km) below the peak, the study found. The pool appears to be about 5 to 10 miles (8 km to 16 km) thick and the same width, the researchers said. (Reporting by Victoria Cavaliere; Editing by Daniel Wallis and Eric Walsh).