Gunung Reng
A limestone outcrop rising straight out of the Galas river in Kelantan, with caves at its base and a legend of a lost kingdom.
Updated 29 August 2026
Gunung Reng is a karst tower standing on the bank of the Sungai Pergau near Jeli, rising abruptly out of flat ground and water with the sheer, undercut sides that limestone in this part of the world produces, and it is one of the sights on the east-west highway across the peninsula because you drive almost directly past its foot. Caves run into the base, some accessible on foot from the riverside, and local tradition attaches the hill to a legendary kingdom said to have been swallowed by the earth, with the rock as what remains. The river below is used for swimming and picnics by people from Jeli and there are basic facilities. The hill can be climbed, though the route is unmaintained, sharp and steep, and most visitors stay at the bottom.
Highlights
- A karst tower on a riverbank - rising sheer out of flat ground and water.
- Caves in the base - openings reachable on foot from the riverside.
- The Pergau river - swimming and picnic spots used by people from Jeli.
- A lost-kingdom legend - the local story attached to the outcrop.
When to go
All year; avoid the north-east monsoon. Half a day.
Things to know
Facilities are minimal. The climbing route is unmaintained and the limestone is sharp enough to cut. The river rises hard in the monsoon and the area floods.
Nearby
Jeli is close; the east-west highway runs on to Gerik and Tasik Banding.
What to pack for Gunung Reng
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Head torch + spare batteries - Hands-free light is essential; caves are truly dark. Find on Amazon
- Strong insect repellent - DEET or picaridin; the jungle is where bites and disease risk are highest. Find on Amazon
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