Doi Nang Non ดอยนางนอน Highest point Elevation 1,276 m (4,186 ft) [1] Listing List of mountain ranges in the world named The Sleeping Lady Coordinates 20°21′06″N 99°50′30″E﻿ / ﻿20.35167°N 99.84167°E﻿ / 20.35167; 99.84167Coordinates: 20°21′06″N 99°50′30″E﻿ / ﻿20.35167°N 99.84167°E﻿ / 20.35167; 99.84167 Dimensions Length 14 km (8.7 mi) NE/SW Width 5 km (3.1 mi) NW/SE Geography Doi Nang Non Thailand Location Chiang Rai (Thailand) Parent range Daen Lao Range Geology Type of rock Limestone Climbing Easiest route From Mae Sai