[2] Among these locations, the archaeological site of Con Moong cave is of central importance for the study of the Mesolithic Hoabinhian culture.

Ten strata, including the cave floor and the top crust (prefeudal to modern) were found and recorded in the cultural sediments.

[3][4] Due to its long history of uninterrupted occupation, the Con Moong site is of great significance for the understanding of Vietnamese and South East Asian prehistory.

In the Con Moong archaeological site, the existence of Sơn Vi culture at the end of the Old Stone Age has been reconfirmed by stratum document.

Layer III is of the Bắc Sơn culture, similar to Hòa Bình II that had been put forward before by M. Colani.

Hòa Bình II or Bắc Sơn culture really belongs to the New Stone Age, with the appearance of axes with ground blades and pottery.