defunct Pishon River was discovered with the aid of Shuttle Imaging Radar technology. It evidently flowed east from the mountainous Hijaz region of Saudi Arabia. Dr. Farouk el-Baz, the geologist and director of the Center for Remote Sensing at Boston University, discovered traces of its course beneath the sand with ground penetrating radar images from the Space Shuttle.50 Because the river flowed east towards Kuwait (where the Tigris and Euphrates debouche into the Persian Gulf) el-Baz named it the