1. History of Pnhom Bakheng Phnom Bakheng was built in 907 AD during the reign of King Sovarman I. This temple is located on the top of a natural mountain located in the center of Yasothon or Angkor I and between Angkor Wat and Angkor Thom. From the foot of the mountain to the top of the temple is 78 meters high, this temple is located between two other mountains, Phnom Krom and Phnom Bok. Phnom..