Where is the earth's crust the thickest?

The crust of the Earth is thickest beneath the continents. The thinnest areas are beneath the oceans. Average thickness varies greatly depending on geography and whether the crust is continental or oceanic. read more

Continental crust is thick and old -- on average about 50 km thick and about 2 billion years old -- and it covers about 40 percent of the planet. Whereas almost all of the oceanic crust is underwater, most of the continental crust is exposed to the air. read more

The crust is thickest under continents!The crust is thickest under Mount Everest, where it's approx. read more