The Big Book of Everything Underground in Bloomington, MN

Take a trip deep underground, where a whole world lives beneath your feet!
There’s so much happening beneath the streets you walk on! Find out fun facts about life underground, including how animals hunt their prey in the dark and what goes on in mine shafts or at the planet’s core. Ten fabulous gatefolds and plenty of informative details on pullout flaps bring this hidden world to light.