Tham Luang Khun Nam Nang Non is a karstic cave system in the Tham Luang – Khun Nam Nang Non Forest Park, near the village of Pong Pha, in Chiang Rai, Thailand. It lies beneath Doi Nang Non, a mountain range on the border with Myanmar.
The cave is also known as Tham Luang, Tham Nam Cham and Tham Yai. Since tham means ‘cave’, the commonly used phrase Tham Luang Cave is a tautology.
A visitor centre outside the main entrance has a detailed map of the cave. There is a car park nearby. The first 1 kilometre (0.6 mi) of the cave is open to the public for guided tours between November and June. The cave floods during rainy season and is closed to visitors.
Tham Luang Khun Nam Nang Non
Location: Baan Chong Wat, Pong Pha, Mae Sai District, Chiang Rai 57130 Thailand