Genesis 14:10

14:10 Now the Valley of Siddim was full of tar pits. When the kings of Sodom and Gomorrah fled, they fell into them, but some survivors fled to the hills.

Genesis 28:11

28:11 He reached a certain place where he decided to camp because the sun had gone down. He took one of the stones and placed it near his head. Then he fell asleep in that place