In a magical area of jungle in the western section of the Kulen Mountain, Kbal Spean was used by the Khmer as a hill retreat in the mid – eleventh century. When they carved sacred lingas and hindu gods into the bedrock of the river, the water flowing down the river would thus be blessed by the carvings before coursing on to Angkor. At the top of the hill, you can rest awhile on a riverside rock.