The Royal-initiated Bhumirak Dhamachart Centre is a large museum where visitors are allowed to learn and experience His Late Majesty King Bhumibol’s concept of development and works in its true form which will enhance their learning and understanding of the royal projects.

The Bhumirak Dhamachart Centre demonstrates the royal concept and theories of agricultural development, environmental improvement, and natural resources conservation.

The museum is divided into two parts including the Light & Sound Museum and the Living Museum. While the former part is designed as a room of ideas behind key royally-initiated projects such the Royal Rainmaking and the New Theory for visitors to see, the latter part is designed as a farm displaying the real function of the ideas to promote better understanding about His Late Majesty’s ideas for the royal development projects.

Located in Ban Tha Dan, Hin Tang Sub-district, Muang District, Nakhon Nayok Province, Khun Dan Prakarnchon Dam comprises a roller-compacted concrete dam, a saddle dam, and a reservoir with the retention capacity of 224 million cubic metres of water. Its crest is 2,594 metres long and 93 metres high. At the dam site, there are other appurtenant structures including diversion structures (during the construction), spillway, bottom outlet, river outlet, and irrigation outlet.

Made of 4.84 million cubic metres of roller-compacted concrete, the dam contains the highest amount of this material, construction-wise, in the world.

Khun Dan Prakarnchon Dam ensures water supply and an efficient irrigation system for 185,000 rai of farmland of more than 9,000 families. Due to its huge retention capacity, water supply is now stable, thus lessen the problem of flood and drought. Finally, the acid soil problem would be solved as well. The reservoir also serves as a fish breeding area and domain for aquaculture.