📝 Written 2 Jul 2026 · ✅ Fact-checked 3 Jul 2026 · prices and schedules can change — check with the operator before booking
If you're talking about the destination that people instantly picture when they think of Prachuap Khiri Khan, Phraya Nakhon Cave is probably near the top of the list — the image of a Thai-style pavilion inside a cave with a beam of light landing right on it has long been used as the signature shot for all of Khao Sam Roi Yot National Park. The cave itself sits in Sam Roi Yot District, about an hour to an hour and a half south of Hua Hin. The starting point for entering the cave is Bang Pu fishing village and Laem Sala Beach, before you continue hiking up to the cave's mouth.
The highlight everyone comes for is the Kuha Karuhas Pavilion, built during the reign of King Rama V on one of his royal visits, sitting exactly where the light beam from the ceiling opening lands during certain moments of the morning. On this page we'll review the site in depth — both the side that makes people fall in love with it and the side you should brace for before you go — covering the route into the cave, the steep climb up, and the best time for the light.
Phraya Nakhon Cave (Kuha Karuhas Pavilion) — Khao Sam Roi Yot National Park, Prachuap Khiri Khan
Phraya Nakhon Cave is a large cave with two collapsed ceiling openings, letting sunlight pour down into the middle of the cave, where green trees have grown up to catch the light. The thing everyone comes to see is the Kuha Karuhas Pavilion, a four-gabled Thai-style pavilion built during the reign of King Rama V on one of his royal visits, sitting on a mound right at the spot where the light beam lands. At certain moments in the morning the light falls in a clear column onto the roof and body of the pavilion, creating the landmark shot that both Thai and international visitors come specifically to capture. According to real reviews on Tripadvisor, Phraya Nakhon Cave holds an average rating of around 4.7 out of 5 from several hundred reviews, and is ranked #1 among things to do in Sam Roi Yot District.
Entry to the cave begins at Bang Pu fishing village, with two route options. The first is to take a fishing boat along the coastline from Bang Pu to Laem Sala Beach, which takes just a few minutes — a good option if you want to save your energy and enjoy sea views along the way. The other option is to hike over a low hill from Bang Pu to Laem Sala Beach — a short distance, but with a fair bit of up-and-down along the way. Once you reach Laem Sala Beach, a small bay ringed by limestone hills, it becomes the starting point for the climb up to the cave's mouth. The path up is a mix of stairs and rocky trail that's fairly steep, taking roughly twenty to thirty minutes to walk. Most reviewers say it's tiring but worth it, especially if you arrive just as the light is hitting the pavilion.
To be upfront about what to prepare for: the climb up to the cave is steep, made of stone and stairs that can get slippery when it rains, so you'll need a reasonable level of fitness and shoes with good grip. Older visitors, young children, or anyone who struggles with hill climbs may find it difficult — and before even reaching the climb, you still need to take a boat or hike over the hill to Laem Sala Beach first. Another thing to plan around is that the window for the best light beam on the pavilion is short, roughly 10:00 to 10:30am, and the exact position of the light shifts with the season. If you arrive late or the sky is overcast, you may not catch the full beam. On top of that, the park charges an entrance fee, and taking the boat comes with a separate boat fee. It also gets quite hot along the trail and inside the cave, so it's best to head out early and set aside half a day for the trip.
- You get to see the Kuha Karuhas Pavilion right as the light beam from the ceiling opening lands on it perfectly — the landmark shot many reviewers say is worth the tiring climb
- One trip covers the cave, the historic pavilion, Laem Sala Beach, and the limestone-hill views of Khao Sam Roi Yot
- Two route options: take a boat to save energy and enjoy sea views, or hike over the hill and skip the boat fee entirely
- Rated around 4.7 out of 5 on Tripadvisor and ranked #1 among things to do in Sam Roi Yot
- The climb up to the cave is steep, made of stone and stairs that can get slippery in the rain, requiring reasonable fitness and grippy shoes — on top of needing to take a boat or hike over the hill to Laem Sala Beach first
- The best light-beam window is short, roughly 10:00 to 10:30am, and shifts with the season — arrive late or on an overcast day and you may miss the full beam
- The park charges an entrance fee, the boat ride has a separate fare, and it gets quite hot along the trail and inside the cave, so you need to start early and set aside half a day
💡 Know Before You Go to Phraya Nakhon Cave
From Bang Pu village to Laem Sala Beach, you have two options. The first is a fishing boat along the coastline, just a few minutes and with sea views along the way, but with a separate boat fee. The other is hiking over a low hill — a short distance but with some up-and-down — with no boat fee. Either way, once you reach Laem Sala Beach you still need to hike up to the cave.
The beam of light from the ceiling opening falls most beautifully on the Kuha Karuhas Pavilion in a short window, roughly 10:00 to 10:30am, and shifts with the season. Leave Bang Pu early so you reach the cave's mouth before 10am, and check whether the sky is clear that day — an overcast sky means the light beam won't show clearly.
The climb up to the cave is a mix of stairs and rocky trail that's steep and can get slippery in the rain. Wear sneakers or shoes with good grip — sandals aren't recommended. Take it slow in stages, don't rush, and if you or anyone in your group (older travelers, young children) can't manage a hill climb, consider that before heading up.
Phraya Nakhon Cave sits inside Khao Sam Roi Yot National Park, so there's an entrance fee — around 40 baht for Thai nationals, around 200 baht for foreign visitors. If you choose to take a boat from Bang Pu, there's a separate boat fare of roughly 200–400 baht per trip. Bring cash for both.
Book a Place to Stay in Prachuap Before Visiting the Cave
Visiting Phraya Nakhon Cave means heading out early to catch the light beam, so staying nearby for a night makes things much easier. Compare prices across several sites here.
Book Khao Sam Roi Yot Tours and Nearby Nature Trips
No car, or don't want to plan the route into the cave yourself? Book a tour that includes transport and times the visit to catch the light beam for you. Compare schedules and prices from several operators online in advance.
Quick Summary Before You Go
Phraya Nakhon Cave is most rewarding when you reach the cave's mouth before 10am on a clear day, in time for the light beam that hits the Kuha Karuhas Pavilion roughly between 10:00 and 10:30am. Take the boat from Bang Pu if you want to save energy, or hike over the hill if you'd rather skip the boat fee — either way, you'll still need to climb the steep path up to the cave's mouth. Wear shoes with good grip, bring water, and have cash ready for the park entrance fee and boat fare.
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