Koh Ker is a remote archaeological site in northern Cambodia about 120 kilometres away from Siem Reap and the ancient site of Angkor. It is a jungle filled region that is sparsely populated. More than 180 sanctuaries were found in a protected area of 81 square kilometres.: 13 Only about two dozen monuments can be visited by tourists because most of the sanctuaries are hidden in the forest and the whole area is not fully demined.
Koh Ker is the modern name for an important city of the Khmer empire. In inscriptions the town is mentioned as Lingapura or Chok Gargyar: 70.: 8–9
Wikipedia https://en.wikipedia.org/wiki/Koh_Ker
Address Cambodia
Coordinates 13°45'53.281" N 104°32'48.942" E