Tham Khao Luang (Khao Luang Cave) is found about 5 km outside of Phetchaburi town and is well worth a visit.
This is a very impressive large limestone cave houses many Buddha statues. It’s not dark or too damp inside. At the foot of Khao Luang Hill a large monastery locally known as Wat Tham Klaep is located.
It is regarded as one of Thailand’s most important cave due to the fact that it houses a Buddha image cast under the royal command of King Rama V as a dedication to King Rama IV. The skylight above the cave also lets the sun light shine through and beautifully illuminates the central Buddha figure.