'High places' in the Bible

For there has gone out a fire from Heshbon, a flame from the city of Sihon. It has consumed Ar of Moab, the lords of the high places of Arnon.

And it happened on the next day Balak took Balaam and brought him up into the high places of Baal, so that from there he might see the edge of the people.

then you shall drive out all those who live in the land from before you, and destroy all their carved images, and destroy all their molded images and pluck down all their high places.