A backing track to a video:

From Under the Craton

The craton is the large central mass in a tectonic plate. The thickness can be as much as 80 miles.

Underneath is the mantle.

Backing vocals courtesy of Diane Jessurun and romantico of ccMixter.org

Music and video rendering by Briareus.

Some video clips produced in Blender, others from the public domain.