Then Abraham ran to the cattle to choose a tender, choice calf. The Midrash, a centuries-old biblical commentary, questions why Abraham ran after the calf. It tells that he ran after the calf because it ran away from him into a cave. Abraham discovered that he had entered the burial place of Adam and Eve. He was drawn to intense light emanating from an opening at the end of the cave. As he approached, he saw the Garden of Eden through the opening.
From The Times of Israel and IsraelSeen