Pakse & the 4000 Islands

A working river town with a thousand-year-old Khmer temple an hour south of it, a coffee plateau above it, and the Mekong at its widest below.

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Southern Laos

A base town, and three different days around it

Pakse is where the Sedone runs into the Mekong, and it is a working town: markets, a bridge, a few decent hotels and not much to look at. Nobody comes for Pakse. They come for the triangle around it — a pre-Angkorian Khmer temple on a mountainside an hour south, a coffee plateau a thousand metres up to the east, and a stretch of the Mekong so wide and broken it is counted in islands rather than banks.

That is why the south takes three nights. The distances are real: an hour to Champasak, an hour and a half to the plateau, three hours to the islands. Most routes split the nights between Pakse and Si Phan Don and use the drive south as the sightseeing day.

The stone sanctuary and stairway of Wat Phou on the hillside near Champasak, southern Laos

A tiered waterfall cascades over rocky ledges at sunset near Tad Lo village on the Bolaven Plateau, Laos.

Wat Phou · The Bolaven plateau

The temple

Wat Phou, which is older than Angkor Wat

Forty-five kilometres south of Pakse, a Khmer temple climbs the lower slopes of a mountain in three terraces joined by a stone stairway, built around a spring at the top. Parts of it predate Angkor Wat by several centuries. It is far less restored than anything in the Angkor park, and that is the appeal: broken sandstone under frangipani, a view across rice fields to the Mekong, and frequently nobody else there. An hour and a half on site, and the strongest argument for coming this far south.

Champasak village below it is worth a night if the itinerary can carry one: one street of timber houses along the river.

Khone Phapheng

Up the hill

The plateau, and the coffee

The Bolaven plateau rises east of Pakse to between a thousand and thirteen hundred metres, roughly ten degrees cooler than the river and wet enough to grow arabica alongside the robusta that covers most of it. Coffee has been planted here since the French period and the smallholder farms show you the whole process. The plateau also has the best waterfalls in Laos.

Tad Fane, twin falls dropping over a hundred metres into a forested gorge.
Tad Yuang, five minutes away, which you can walk down to and swim below.
Tad Lo, further east, where a village sits at the falls.

A wooden riverboat rests on the bank of the Mekong River at sunset near Pakse, Champasak. — The Mekong near Pakse

The islands

Si Phan Don, where the Mekong loses its shape

Three hours south of Pakse the Mekong spreads to fourteen kilometres wide and falls apart into hundreds of islands — Si Phan Don, the four thousand islands. Don Khong is largest and quietest; Don Det and Don Khon, joined by a French railway bridge built to portage cargo around the falls, hold the guesthouses.

Two waterfalls anchor the visit. Li Phi, beside Don Khon, is a chaos of channels rather than one drop. Khone Phapheng, on the mainland bank, carries more water than any other fall in Southeast Asia. The Irrawaddy dolphins this stretch was famous for are another matter: the Lao side of the pool is effectively empty, so we do not sell dolphin trips here.

Seasons

The water year

November to February is the dry season and the easiest travelling. March to May is very hot on the river — over 35°C is routine — though the plateau stays cooler and is the one part of Laos comfortable in April. The rains bring the falls to full volume by August, at the cost of mud on the plateau tracks.

Three nightsTwo in Pakse or Champasak, one on the islands.

Four nightsAdds the full Bolaven loop, or a night on Don Khon.

November to FebruaryThe reliable window for going on into Cambodia.

August to OctoberThe falls at their best, the plateau roads at their worst.

Borders

The border that works one way on paper

Si Phan Don is forty-odd kilometres from Cambodia, and this is the only overland link between the two countries. The asymmetry is the point. Going south, the Cambodian e-visa is accepted at Trapeang Kriel — one of only two Cambodian land gates where it is. Coming north into Laos at the same crossing, which the Lao side calls Nong Nok Khiene, the Lao e-visa is not valid at all: there you buy a visa on arrival, and an e-visa bought in advance is wasted.

Onward leg	How long	What to know
Pakse to Si Phan Don	About 3 hours by road, then a boat	Takes in Wat Phou if you start early.
Si Phan Don to the Cambodian border	About 1 hour	Trapeang Kriel accepts the Cambodian e-visa; Nong Nok Khiene does not accept the Lao one.
Border to Siem Reap via Stung Treng	A long day by road	Most routes break it at Kratie or Stung Treng.
Pakse to Vientiane	About 1 hour 10 by air	The road north is eight to ten hours.

Checked 20 September 2026

The Lao e-visa is single entry, 30 days, must be carried printed, and is valid at nine ports only — three airports including Pakse, Friendship Bridges I, II and IV, the Boten checkpoint and the Boten and Khamsavath railway stations. Nong Nok Khiene is not on that list, nor is the Thai crossing at Vang Tao west of Pakse; at both you buy a visa on arrival. Cambodia’s e-visa is accepted at Trapeang Kriel. We do not publish fees: your coordinator confirms the current figures.

Follow the river into Cambodia.

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Tell us your dates

We will tell you which visa each side of that border needs, and whether the falls will be running.

Plan My Trip

Common questions

Questions travellers ask most

Is Wat Phou worth the journey from Vientiane?

On its own, no. As part of three or four nights in the south — the temple, the coffee plateau and the river islands — yes, and it is the quietest important Khmer site you will visit anywhere.

Can I cross from the 4000 Islands into Cambodia?

Yes, and it is the only overland crossing between the two countries. Heading south, the Cambodian e-visa is accepted at Trapeang Kriel. Heading north into Laos, the Lao e-visa is not valid at that gate, so you buy a visa on arrival instead.

Will I see the Irrawaddy dolphins?

Almost certainly not. The Lao stretch of the river is effectively empty of them now and sightings are a matter of luck. We do not include dolphin trips in southern Laos itineraries.

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