'Hills' in the Bible

They sacrifice on the mountaintops,and they burn offerings on the hills,and under oaks, poplars, and terebinths,because their shade is pleasant.And so your daughters act promiscuouslyand your daughters-in-law commit adultery.

The high places of Aven, the sin of Israel,will be destroyed;thorns and thistles will grow over their altars.They will say to the mountains, “Cover us!”and to the hills, “Fall on us!”