Phnom Sampeou is a natural site located along National Road 57 in Sampeou commune, Battambang district, about 12 kilometers from the provincial town. Atop a 100-meter-high mountain stands a pagoda and three natural caves: Pkasla, Lakhaon and Aksopheak. Pkasla cave is full of uprooted stones and is considered important because it is where Phnom Sampeou residents come to celebrate after a marriage.

Next to the Phnom Sampeou are several important mountain clusters, including Phnom Kdaong, Phnom Krapeu, Phnom Trung Moan, Phnom Trung Tear and Phnom Neang Romsay Sok. All are related to the Khmer folktale titled Reachkol Neang Romsay Sok.