Inside the cave are Buddha statues carved into the walls. Among them is Phra Phuttha Chai Tham Rishi Khao Ngu, a seated Buddha statue with dangling feet, delivering a sermon in the Dvaravati style (11th–13th centuries CE). The face is flat, the eyebrows are raised and curved like crow's wings, the hair is voluminous and folded, and the halo is shaped like a lotus bud. Between the ankles is an inscription in Pallava Sanskrit: "Punyakarmacharasri Samadhikupta," which means, "Phra Sri Samadhikupta is pure through merit." This is considered another important example of Dvaravati art. The cave also contains numerous sandstone Buddha statues in the Ayutthaya style.

Khao Ngu Stone Park contains interesting sights, including the laterite Buddha footprint, which is kept in the temple. It is located on the summit of Khao Ngu Mountain, approximately 128 meters high. The remains are those of a rectangular brick and mortar building. Tham Fa Tho is located about 250 meters west of Tham Rishi Khao Ngu. There are carvings on its south wall.

Location: Tambon Phlap Phla, Mueang Ratchaburi District, Ratchaburi Province. Activities

1. Long bridge over the lake: A popular photo spot with boat rentals for sightseeing tours. 2. Buddha statue carved into the rock: A large Buddha statue carved into a rock face, creating a peaceful and mystical atmosphere.

2. Archaeological caves: Such as Tham Rue Si, Tham Fa Tho and Tham Chin-Cham, which contain ancient Buddha images from the Dvaravati period.

3. Phu Pha Raet (Hidden Gem of Khao Ngou): A photo check-in point with a high rock wall and a nearby cafe with a nice atmosphere.

Opening hours: Open daily from 9:00 AM to 5:00 PM.

Location: Phlapphla Subdistrict, Mueang Ratchaburi District, Ratchaburi Province