The garden's region, 'in the east' (2:8), watered by a river that splits into four. Two of the four rivers are certainly the Tigris and Euphrates, anchoring the geography broadly in Mesopotamia; the other two (Pishon, Gihon) have long been unidentified. Expedition Bible's Joel Kramer proposes the dry Wadi Ar-Rummah — traced across Arabia by satellite and field survey, matching rock deposits from its source to its end — as the Pishon, joining the Tigris and Euphrates near the head of the Persian Gulf; that would place Eden itself in the area of modern Kuwait, or just offshore under the Gulf. Guarded by cherubim after the expulsion (3:24).