Mekong islands near Cambodia

Si Phan Don (4,000 Islands)

Hammocks, bicycles and the mightiest waterfall in Southeast Asia.

Don Det & Don Khon
Nature01

Don Det & Don Khon

ດອນເດດ ແລະ ດອນຄອນ

Twin islands of hammocks, bicycles and rice fields in the braided Mekong near Cambodia.

  • Reach them by boat from Nakasang
  • Rent a bicycle to link both islands
  • Bring enough cash
Khone Phapheng Falls
Nature02

Khone Phapheng Falls

ນ້ຳຕົກຄອນພະເພັງ

The largest waterfall in Southeast Asia by volume, where the whole Mekong thunders over rock.

  • Most powerful from August to October
  • Use the viewing platforms
  • Combine with lunch nearby
Li Phi (Tad Somphamit) Falls
Nature03

Li Phi (Tad Somphamit) Falls

ນ້ຳຕົກຫຼີຜີ (ຕາດສົມພະມິດ)

Churning rapids on Don Khon, where fishermen set traditional bamboo traps.

  • Walk the riverside paths
  • Watch the fish traps at work
  • Don't swim, as the currents are deadly
The old French railway bridge on Don Khon
History04

French colonial railway

ທາງລົດໄຟສະໄໝຝຣັ່ງ

The old bridge and rusting locomotive of a short railway that once portaged boats past the falls.

  • Cycle across the Don Det to Don Khon bridge
  • See the locomotive on Don Khon
  • A small island fee applies
An Irrawaddy dolphin surfacing
Nature05

Irrawaddy dolphins: an honest note

ປາຂ່າ: ຂໍ້ມູນຕາມຄວາມຈິງ

The last dolphin of the Lao-Cambodian border pool died in 2022. Tours still advertise sightings on the Lao side.

  • Don't book 'dolphin tours' on the Lao side
  • Surviving groups live further downstream in Cambodia
  • Support fishing-net rules that protect the river
A sandbank among the islands of Si Phan Don
Adventure06

Kayaking the islands

ພາຍເຮືອຄາຢັກອ້ອມເກາະ

Guided paddles through the channels and past rapids towards the Cambodian border.

  • Always go with a guide
  • Full-day trips include lunch
  • Wear sun protection
Sunset side of Don Det
Nightlife & social07

Sunset side of Don Det

ຝັ່ງຕາເວັນຕົກຂອງດອນເດດ

A strip of bungalow bars facing west over the Mekong. It is the islands' social hub.

  • Grab a hammock by 5:30 PM
  • Meet travellers from everywhere
  • Power can be patchy, so bring a torch
The Laos-Cambodia border crossing south of Si Phan Don
Getting around08

Crossing to Cambodia

ການຂ້າມໄປກຳປູເຈຍ

The Nong Nok Khiene border lies just south, with buses on to Stung Treng and Kratie.

  • Get a Cambodian e-visa in advance
  • Use reputable bus companies
  • Carry US dollars for fees

Checked September 2026. Opening hours, prices and boat or train timetables change, so confirm locally before you go. Photo credits

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