Chaloem Rattanakosin National Park is the smallest park in Kanchanaburi Province. Its main features are fertile forests, steep limestone mountains, attractive waterfalls and mysterious caves. The park was designated in February 1980 as Thailand's 17th National Park and covers an area of 59km2. The forested, limestone mountains of the Park are the watershed of Mae Klong River. The highest peak in the Park is Kam Paeng Mountain, which reaches 1,260m.

Most of the area consists of complicated limestone mountains with the highest peak is Kam Pang Mountain Peak about 1,260 meters above sea level. The area is the source of Klong River area.

Tan Lod Noi Cave

the subtle lighting in this 300m cave illuminates the many weird and wonderful stalactites. A small stream Tharnlod cools the air in the cave. A 2km. trail leads from this cave to its sister cave, taking you past a huge tree covered with bamboo stakes that villagers use to climb and collect honey from bees nests in the upper branches. After about an hour you will reach.

Tan Lod Yai Cave

a spectacular sinkhole with a natural stone arch over the stream. The cave is an ancient graveyard and weapons, skeletons and charms have been bound all over the cave.