On September 12, in Dong Gia Nghia ward, Lam Dong Provincial People's Committee held a ceremony to announce the Prime Minister's decision to recognize Dak Son stone players as national treasures.
According to the Department of Culture, Sports and Tourism of Lam Dong province, the Dak Son stone cages were accidentally discovered underground when people dug a hole to grow pepper for agricultural cultivation at a depth of 50 to 90 cm in 2014 in Dak Son village, Nam Xuan commune, Krong No district, old Dak Nong province - now Dak Dak Dak commune, Lam Dong.

The Dak Son stone set is made from Rhyolite stone (deformed stone), dating back about 3,500 - 3,000 years, including 16 bars. Of which, 11 bars are still intact, 5 bars are broken in half or three but can still be restored to their original state, qualified for research on processing techniques.
The average length of the bars is 57.6 cm, the average width is 12.4 cm, the average thickness of the bars is 3 cm, the average weight is 3.94 kg, the frequency of sound ranges greatly, the lowest is 191.9 Hz, the largest is 4,500 Hz.

The Dak Son stone instrument collection is not only a testament to the diverse and rich spiritual and cultural life of local residents in Dak Son commune, but also affirms that this is a collection of special historical and cultural value, of indigenous origin, locally produced in the prehistoric Western land.
On this occasion, Lam Dong province announced the decision of the Minister of Culture, Sports and Tourism on ranking national relics and scenic spots of Hang C3, C4, C7, C8 in the Krong No volcanic cave system (old Dak Nong province).

This is part of the longest volcanic cave system in Southeast Asia, with a unique geological structure and high research value, formed from the outbreak of Chu B'luk volcano about 600,000 - 200,000 years ago.
In addition, the Tam Blang M'prang Bon festival (the bon plantion and tree worship ceremony) of the M'ong people is also included in the list of national intangible cultural heritages by the Ministry of Culture, Sports and Tourism.