Tham Kaew Saraphat Neuk, i.e. ‘Magic Crystal Cave’, which is in English also referred to as Magic Cave Land, is a cavern located on the compound of Wat Tham Trairat, a Thai Buddhist temple in Nakhon Ratchasima.

The cave is believed to be sacred and is divided into five major zones, one of them featuring a reusi's skeleton, i.e. the remains of a hermit that allegedly lived in the cave some 4,000 year ago.