Located in northern Cambodia, Koh Ker is a remote archaeological site in , about 120 kilometers (75 mi) away from the ancient site of Angkor. The site is surrounded by the wild Cambodian jungle and the lonely temples and pyramid partly overgrown by the forest.
The seven‑tiered pyramid called Prang was probably the state temple of Jayavarman IV. Construction of the sanctuary was started in 928 AD. At ground level one, side of the square building measures 62 m (203 ft). The height is 36 m (118 ft). Originally on the top platform stood a huge lingam probably more than 4 m (13 ft) high and having a weight of several tons.
Inscriptions say that it was the tallest and most beautiful Shiva-lingam. The lingam probably stood in a shrine which some researchers say could have been about 15 m (49 ft) high. On the north side of the pyramid is a steep staircase leading to the top. The original stairs are in a very bad condition as is the bamboo-ladder which was constructed in the 20th century, so it is forbidden to climb to the top of the pyramid via this route. There is however a new staircase which can be used to ascend to the top of the pyramid.
Concerning the seventh tier some scientists say, this was the platform of the shrine because on its sides beautiful reliefs of Garudas were made. There is just one Khmer temple which resembles the temple Baksey Chamkrong in Angkor. But the four‑tiered monument there is much smaller and has a staircase on each of the four sides. On the platform on the top of the Baksey Chamkrong is a prasat in a good condition.