Doi Nang Non

Doi Nang Non is a karst mountain ridge in Chiang Rai province, northern Thailand, known locally as the “Mountain of the Sleeping Lady.” It is most widely noted for the Tham Luang cave complex located within the ridge.

The range offers ridge viewpoints and entrances to cave passages; the Tham Luang system drew international attention during the July 2018 cave rescue of a youth football team. Hiking and viewpoint access are the main reasons most people visit, alongside guided cave tours where permitted.

The ridge is a natural karst formation shaped by limestone dissolution and cave development over geological time. Modern interest in the area increased sharply after the 2018 rescue operation, which involved international cave-diving teams and emergency services.

Doi Nang Non sits in northern Thailand’s highland terrain within Chiang Rai province, west of the provincial capital. The ridge is part of the local watershed and is accessible from nearby towns and villages in the surrounding hills.

• Tham Luang cave rescue: The cave system at Tham Luang Nang Non was the site of a high-profile international rescue operation in July 2018 that brought global attention to the area.
• Sleeping lady silhouette: The ridge is a karst formation whose silhouette is commonly described as a reclining woman, which is the source of the name.

• Visit during the cool, dry season (roughly November-February) for clearer views and safer hiking conditions - the area can be very wet and slippery in monsoon months.
• If you plan to approach caves in the Doi Nang Non range (including the Tham Luang area), don't enter unaccompanied: use licensed local guides and heed any memorials or restricted zones set up after the 2018 cave rescue.