Nestled at the foothills of Khao Ngu Park in the sub-district of Koh Phlabpla, this area is characterized by a cave or religious site related to Buddhism. The first striking impression is created by the unique undulating shapes of Khao Ngu, reminiscent of mountains from a fantasy world. As one delves deeper, it becomes apparent that this mountain is home to numerous fascinating sites. Particularly at the summit is the Rishi Cave, where the entrance showcases a large carved Buddha image seated in the posture of a teaching sermon, an exquisite example of art from the Dvaravati period (circa the 11th to 13th century). Widely known as the Buddha Shadow of Rishi Cave at Khao Ngu, it is believed that this Buddha statue was created during the Gupta period in India, as evidenced by the inscriptions in the southern Indian script found near the footprint area, reading "Boon Vara Rishi Sri Samadhi Kuppa," which refers to the Buddha Rishi safeguarding meditation at Khao Ngu. Entering the cave reveals numerous sandstone Buddha figures from the Ayutthaya period. Close by the Rishi Cave, visitors can trek to pay homage at a replica footprint made of laterite. While there is no definitive evidence regarding the date of this replica, many devotees regularly visit to pay their respects. Additionally, Khao Ngu has another intriguing cave known as the "Vase Cave," located approximately 250 meters to the west of the Rishi Cave. Aside from several fragments of sandstone Buddha images found within, this cave's highlight is its massive reclining Buddha image, surrounded by celestial beings and adorned with a sculptural tree image. To the north, two of the Buddha's disciples are intricately carved. Every year, on the first full moon of the 11th lunar month, a worship ceremony is held. The site is open to visitors daily from 8:00 AM to 5:00 PM.