Wadi al-Thumamah (Arabic: وادي الثمامة) is a wadi (valley) located approximately 90 kilometers northeast of Riyadh in Riyadh Governorate, Saudi Arabia.
[1][2] It descends from the Al-Armah mountains and passes through Ghilanah village and ends at Rawdat Khuraim in Ramah Governorate of Riyadh Province.
[3][4][5] The valley is 60 km long and has an average slope of 3 min/km.
Named after Thumam (Arabic: الثمام), the Arabic word for desert bunchgrass.
This article about the geography of Saudi Arabia is a stub.