It was Alps its located in the south central Europe, they extend for almost 700miles from the coastline of southern france
What mountain range is found in the south central europe ::: ALPS IS THE MOUNTAIN.
the process by which Earth makes heat is called radioactive decay. it involves the disintegration of natural radioactive elements inside Earth. ex; uranium is a special kind of element because when it decays, heat is produced from it
Maybe under your bed hope that helped :)