Bakong and Phnom Bakheng
Development of Massive Mountain-Temples

In 881 A.D. Indravarman I built a temple at Bakong and dedicated it to the god-king Indresvara. Bakong is the central temple of the Roluos Group of Monuments, and marks the beginning of advances in rapid development of mountain0temple construction. Around the year 900 A.D. Yasovarman I built the first large city in the Angkor region and a pyramid temple dedicated to the god-king Yasodaresvara on the summit of Phnom bakheng, a mountain located in the center of the city. He also built mountaintop temples on Phnom Krom and Phnom Bok, two of few natural stone mountains in the flatlands of Angkor.