GIVAT HA’EYTAM, WEST BANK — Givat Ha’eytam, a lonely hill in the Israeli occupied West Bank, seems like anything but a natural part of the bustling 8,000-person Jewish settlement of Efrat. Indeed, the stony outcrop, with its view of Efrat’s buildings in the distance, soon will be cut off from that settlement by the separation barrier Israel is building across the length of the West Bank, ostensibly to protect Israelis from Palestinian terrorism.