Emek Rephaim Valley of the Giants
The largest valley in Jerusalem is called Emek Rephaim in which the neighborhoods of Katamon, Mekor Chaim and Baka are located.
The name Rephaim comes from the name of a people that inhabited the land before Jews entered it. They were exceptionally large and the very sight of them caused people's hands to become weak – ropheh in Hebrew – hence their name Rephaim.
In ancient times this valley served as farming land for Jerusalemites.