After initial reconnaissances by French scholars, the historical relevance of Phnom Kulen was pointed out by
Philippe Stern, who visited it in 1936 and described
Rong Chen as the first
temple-mountain. In 1973 and 1979
Jean Boulbet and
Bruno Dagens published the fundamental archeological inventory and mapping of Phonm Kulen. In 2008 Archaeology & Development Foundation begun Phnom Kulen Program, an archaeological project focused even on sustainable development of local communities. In June 2013, an archaeological team announced the discovery and mapping of the ancient city of
Mahendraparvata on the slopes of Phnom Kulen. The multi-year expedition was notable for its use of
Lidar technology to reveal the layout of the city from beneath jungle and earth. 30 previously unidentified temples have been discovered. ==References==