About 20 metres.
yeowatzup — CC BY 2.0 · Jean-Pierre Dalbéra from Paris, France — CC BY 2.0 · Prerit https://www.flickr.com/people/prerit/ — CC BY-SA 2.0
A green upland plateau protected as a national park since 1993 over 373 square kilometres, and to Cambodians their holiest mountain: here King Jayavarman II proclaimed himself king of kings in 802, the event seen as the birth of the Khmer empire. The road climbs through forest to the top, where a small river runs over rocks whose bed is carved with ancient religious symbols and reliefs, known as the River of a Thousand Lingas. Close by are two waterfalls, the larger dropping about 15 to 20 metres into a tree-lined pool, a weekend picnic spot for locals. The mountain also has an old monastery on a high rock visited by Cambodian pilgrims, and small stalls selling forest fruit. The air is cooler than on the plain, and the views from the edges reach over the lowlands towards Angkor. Foreigners pay USD 20, separate from the Angkor Pass, bought in Siem Reap or at the start of the road. Rural Cambodia still has landmine remnants, so stay on trodden roads and paths, per UK travel advice.
About 20 metres.
Carved riverbed.
On the plateau.
Phnom Kulen National Park, about 48 km north-east of Siem Reap
No, it costs a separate USD 20 and needs at least half a day by car from Siem Reap.