Khao Kho and Phu Thap Boek

Khao Kho and Phu Thap Boek are mountain areas in Phetchabun province, in the hills between central and north-eastern Thailand, where Thais come for cool air, sunrise viewpoints over a sea of mist and a night in a tent. The best-known sights are the hilltop temple Wat Phra That Pha Son Kaew, with its five white Buddha images, and Phu Thap Boek, at 1,768 meters the highest mountain in the province; both are hard to reach without a car or a tour.

This is a domestic destination first: most visitors are Thai, and TAT warns that accommodation fills at weekends and on Thai holidays. For a foreign visitor that means two things: book ahead, and plan your transport before you go, because buses stop in the lowland towns. In return you get a part of Thailand few overseas travelers see, with pine forest, winding roads and cold mornings.

Khao Kho: cool mountains in Phetchabun

The Tourism Authority of Thailand (TAT) puts Phetchabun province some 340 km north of Bangkok and describes it as best known for "amazing scenery surrounded by mountains and mist". Khao Kho is a cluster of small and large mountains in the Phetchabun range, which TAT calls one of the province's most famous attractions for its year-round cool temperatures and views. The name comes from the ton kho, a fan palm that grows on the slopes, and TAT lists deciduous, pine and evergreen forest.

Much of the area is protected as Khao Kho National Park, which the Department of National Parks (DNP) places in its cheapest fee group: 100 baht for a foreign adult and 50 baht for a child. TAT's national-park list for 2023 noted a seasonal closure of the park's Than Thip waterfall from June to September, so expect some trails and waterfalls to close in the rainy season. Our page on dual pricing explains the fee categories.

Wat Phra That Pha Son Kaew and its five white Buddhas

Wat Phra That Pha Son Kaew is the image most people have of Khao Kho: a hilltop temple with five large white seated Buddha images, set one behind another in descending sizes. TAT says the temple stands on a hilltop at Ban Thang Daeng in Khaem Son sub-district, covers 91 rai, and was founded in 2004 as a center for Buddhist meditation practice. It is not an ancient monument, whatever you may read.

Beyond the five Buddhas, TAT's page describes a chedi whose base is used for meditation and for teaching materials, a sala with large glass windows onto the mountains, Buddha images carved from green and white jade, and a courtyard of bodhi trees. In 2026 TAT included the temple in its "Amazing Thailand Ambassador" campaign. On a clear morning, TAT notes, a sea of mist drifts around the hilltop.

This is a working meditation center that also runs courses, booked through the temple. We found no official opening hours or dress code, so dress as for any temple, with shoulders and knees covered, keep your voice down near people practicing, and check the details on arrival. Our guide to temple etiquette covers shoes, photographs and behavior near Buddha images.

The sea of mist: viewpoints and the cool season

The "sea of mist" (thale mok in Thai) is the reason many Thai visitors come in the cool season. On clear, still nights the valleys fill with cloud, and at dawn the ridges stand above it like islands. TAT describes the sunrise view from Phu Thap Boek as "just magic in the early morning", and promotes the mist at Wat Pha Son Kaew in the same terms.

Mist is never guaranteed. It needs a clear night and calm air, and a cloudy or hazy morning hides it. Give yourself two mornings if the view matters to you. Dress for the cold: these are among the few places in Thailand where a jacket, long trousers and warm socks are necessary at dawn. If you are coming from the north, the same kind of mountain morning is on offer in Chiang Dao, north of Chiang Mai, and around the tea hills of Mae Salong in Chiang Rai.

Phu Thap Boek: the highest mountain in the province

Phu Thap Boek, at 1,768 meters, is the highest mountain in Phetchabun, according to TAT. It is in Lom Kao district, and the DNP confirms that the summit area belongs to Khao Kho National Park. TAT warns that the road to the top is "very curvy and quite steep sometimes". Once up there, the reward is cold, fresh air and, with luck, a sunrise over the mist.

The summit area is lived in as well as visited. The DNP names the highland village of Ban Doi Nam Phiang Din there, and resorts, campsites and viewpoints such as Pha Hua Sing line the ridge. Some of that building has gone too far: in 2023 and 2024 the DNP moved to remove two resorts near Pha Hua Sing that had built tent platforms, domes and cabins on national-park land, and its director-general ordered the structures removed. You cannot easily tell from a booking site whether a place is legal; if in doubt, ask the park office.

Tents, cabins and booking ahead

Sleeping on the mountain is the point of the trip. Most beds are in private resorts with tents and small cabins; the DNP's own case files describe tent platforms and domes on the ridge. TAT warns that accommodation on Phu Thap Boek is "in high demand on weekends and Thai holidays", and advises booking in advance or coming on weekdays. Cool-season long weekends are the obvious times to avoid if you can.

If you camp in a national park instead, our guide to camping in Thai national parks explains the DNP booking system, tent hire and the rules on fires and litter. Whatever you book, ask whether bedding is included and how warm it is; nights at this height are cold by Thai standards, and a thin sleeping bag is not enough in December and January.

The Khao Kho memorial: a note on history

These mountains were not always a holiday area. TAT's own page on Khao Kho refers to fighting in the mountains, and the DNP records that the memorial known in Thai as the Khao Kho memorial to those who sacrificed their lives was opened on 20 February 1984. In June of the same year, a wildlife breeding station was set up at Ban Panyadi in Khao Kho sub-district, on about 20 km² of land.

We found no neutral official account of the conflict to summarize here, so we leave the history to the memorial itself and to the families who remember it. If you visit, treat it as a place of remembrance: dress modestly, keep your voice down and ask before photographing people paying their respects.

Getting there: why you need a car or a tour

The mountain sights are spread over a large area linked by steep, winding roads, and we found no public transport that goes up to Wat Pha Son Kaew or Phu Thap Boek. Interprovincial buses run from Bangkok to Phetchabun's lowland towns, but the state Transport Company's timetable could not be reached when we checked in October 2026, so confirm times at the terminal or with the operator; our guide to long-distance buses explains the terminals and classes. From the bus you still need a vehicle for the mountains.

That leaves three practical options. You can rent a car, which our guide to renting a car in Thailand covers; hire a car with a driver, as explained in hiring a car with a driver; or join an organized tour. If you drive, use low gears on the descents and take bends slowly: drivinginthailand.com has a detailed guide to mountain roads and hairpin bends. A scooter is not a good idea for an inexperienced rider on these gradients.

Phetchabun also links naturally with other trips. To the west, Phitsanulok has trains and flights from Bangkok. To the north, TAT's suggested mountain route continues from Phu Thap Boek to Dan Sai in Loei, covered in our guide to Chiang Khan and Loei. The province also has the UNESCO-listed ancient town of Si Thep, inscribed in 2023.

When to go: cold mornings and smoky springs

The cool, dry season from about November to February is the time for mist and clear views. The Thai Meteorological Department has no official climate station on the mountains themselves; its nearest valley station, Lom Sak at 143 meters, averages a low of 18.1 °C in January, and the summits at well over 1,000 meters are considerably colder. Pack for cold dawns.

From February to April, fire and smoke are the problem: the DNP reported a forest-fire hotspot in Khao Kho National Park in February 2026, and haze can hide the views entirely. Read our guide to PM2.5 air pollution if you plan a spring trip. The rainy months turn the hills green, but roads are slippery and some waterfalls close; check road and park conditions before you drive up.

Frequently asked questions

Is Phu Thap Boek in a national park?

Yes. The Department of National Parks places the Phu Thap Boek area inside Khao Kho National Park, in Lom Kao district of Phetchabun. It is not in Nam Nao or Phu Hin Rong Kla, as some sites claim. Khao Kho is a Category 1 park: 100 baht for a foreign adult.

How old is Wat Pha Son Kaew?

It is modern. TAT says Wat Phra That Pha Son Kaew was founded in 2004 as a meditation center on a 91-rai hilltop site. Its five white Buddha images, jade Buddha images and chedi are recent work, not historic monuments.

Can you get to Khao Kho by public transport?

Only partly. Buses run from Bangkok to the lowland towns of Phetchabun province, but we found no public transport that goes up to Phu Thap Boek or Wat Pha Son Kaew. You need a rented car, a car with a driver or an organized tour.

When is the sea of mist best?

On clear, calm mornings in the cool season, roughly November to February, around sunrise. Mist is never guaranteed, so allow two mornings and stay on the mountain the night before rather than driving up in the dark.

Sources

• Tourism Authority of Thailand – Mountains, national parks and temples of Phetchabun and Loei (checked October 2026)
• Tourism Authority of Thailand – Si Thep inscribed as a World Heritage Site (Phetchabun attractions) (checked October 2026)
• Tourism Authority of Thailand – Wat Phra That Pha Son Kaew (archived copy, April 2025) (checked October 2026)
• Tourism Authority of Thailand – Khao Kho (archived copy, August 2024) (checked October 2026)
• Department of National Parks – Removal of encroaching resorts at Phu Thap Boek, Khao Kho National Park (January 2024) (checked October 2026)
• Department of National Parks – Khao Kho memorial and wildlife station (history) (checked October 2026)
• Kapook – Department of National Parks fee list by category (checked October 2026)
• Thai Meteorological Department – Climate normals 1991–2020 (Lom Sak station) (checked October 2026)