Final answer:
The mantle is located beneath the Moho at an average depth of about 35 kilometers below the Earth's surface.
Step-by-step explanation:
The mantle, the largest part of Earth's interior, is located beneath the Moho. The Moho, also known as the Mohorovičić discontinuity, is the boundary between the crust and the mantle. It is located at an average depth of about 35 kilometers below the Earth's surface.