The Wadi Mukattab (Arabic for "Valley of Writing"), also known as the Valley of Inscriptions, is a wadi on Egypt's Sinai Peninsula near St Catherine's Monastery. It links the main road in the Wadi Feiran with the Wadi Maghareh's ancient turquoise mining area. The wadi is named after its valley's many petroglyphs. Nabataean and Greek inscriptions are abundant.