'Foot of the Mountain' in the Bible

Moses brought the people out of the camp to meet God, and they took their place at the foot of the mountain.

and Moses wrote down all the words of the Lord. Early in the morning he built an altar at the foot of the mountain and arranged twelve standing stones -- according to the twelve tribes of Israel.

You approached and stood at the foot of the mountain, a mountain ablaze to the sky above it and yet dark with a thick cloud.