Wadi al-Rummah

Wadi al-Rummah or ar-Rummah (ar: وادي الرمة) is one of the Arabian Peninsula's longest river valleys, at a length of almost 600 km (370 mi).

Now mostly dry and partly blocked by encroaching sand dunes, the wadi rises near Medina at Jibāl al Abyaḑ (the White Mountain).

According to Dr. Abdullah Al-Musnad from the University of Qassim,[citation needed] about 10,000 years ago it was a river flowing from Medina to the Persian Gulf, with a total length of 1,200 km (750 mi).

[3] Farouk El-Baz piqued the interest of Biblical scholars around the world with his announcement of paleo-drainage from Arabian Peninsula into the Persian Gulf.

El-Baz studied the images, and noticed that traces of a defunct river that emerged from Kuwait and crossed northern Arabia from west to east were visible beneath the sands, thanks to the ground-penetrating capabilities of the radar technologies.