We have a number of talks coming up about our expeditions, register for a talk by clicking here!

  • Overview
  • Objectives
  • Skills you gain
  • Costs to Consider
  • Site Conditions

2024 Dates
2 weeks: 2 weeks terrestrial only – 30 June13 July 2024

Click Here for Expedition Dates

This two week expedition will be spent in the forests of the Wallacea region on Buton Island. The field teams will spend time at two different forest camps during the expedition allowing for data collection over a greater area.

North Buton Forest biodiversity experience

The Langkube Valley lies within the North Buton Nature Reserve (82,000 ha) and represents a vast area of unexplored, primary rainforest. The region supports an array of different habitats that remain largely unknown to science. Importantly, it is also a stronghold for the endangered Anoa, a CITES listed dwarf buffalo. After completing training in jungle survival skills (which can include a canopy access course for an additional cost) and learning about Wallacean wildlife and conservation, volunteers will assist a team of biologists documenting the valley’s rich biodiversity. Biologists will focus on mammalian, avian and herpetological assemblages together with forest structure and carbon surveys. Particular attention will be given to records of endangered Sulawesi endemics, such as the Anoa and the Maleo, both rarely sighted but critically important species for local conservation efforts. There exists a high likelihood that new species records for Buton Island will be made given that this expedition will be working in remote and previously unsurveyed forests. Survey techniques include the use of camera traps, distance and patch occupancy estimates for large mammal species, mist netting for bats, Pollard counts for butterflies, standard search transects for reptiles, spotlight surveys for amphibians, and point counts for birds. There is also the opportunity to complete a half day course which will train you into how access the tree canopy using ropes and ascenders (this is an optional course costing £190).

Indonesia - Wallacea Terrestrial Research Objectives

The Wallacea region comprises islands of the central part of the Indonesian archipelago that are separated by deep ocean trenches which prevented them from being joined to the main continental land masses during the lowered sea levels of the Ice Ages. As a result of subsequently long periods of isolation, a large number of unique species evolved. The forests of the Wallacea region are one of the least biologically studied areas in the world and one of the most likely places to discover vertebrate species new to science. Since 1995, the Opwall teams have been surveying the biodiversity of Buton Island in SE Sulawesi, so that more information is now available on the wildlife of this well studied area than anywhere else in the Wallacea region. The Opwall gathered data are being used to assess the impacts of potential carbon offset funding schemes in protecting the carbon and biodiversity of the forests and ensure that local communities have a financial benefit from this conservation programme.

  • Attend lectures/workshops about the Wallacea region and its ecology from published research
  • Learn survey methods to sample birds, butterflies, large mammals, reptiles, amphibians, and bats
  • Learn how to conduct habitat surveys and calculate the carbon biomass of an area of forest
  • Learn skills to work and live safely in a remote rainforest research site
  • Live and work with local people and learn about Indonesian culture, customs and language
  • Work with a team of Indonesian and international scientists from around the world
    • Opwall fee.
    • Cost of international flights into and out of Jakarta or Bali.
    • Cost of internal travel to/from the start/finish point of the expedition, plus any hotels you might require. The standard package costs approximately £154 or $200 (Jakarta) or £198 or $257 (Bali). This does not factor in internal flights so please get in touch for internal flight quotes.
    • Extra nights’ accommodation in Jakarta or Bali costs around £28 or $36 (breakfast included).
    • Park entrance fees are £25 or $33.
    • Visa costs of approx. £25 or $32 for a VOA for 30 days. Approx. £75 or $95 for 60 day visa necessary for stays of 31-60 days. Please get in touch with someone from Opwall for more detailed advice.
    • Vaccinations and prophylactic medicines – cost can vary depending on your healthcare provider.
    • Spending money for snacks/drinks/laundry – Indonesian rupiah only.
    • All prices in GBP or USD unless specified.
    • Standard travel insurance – cost can vary, for 2 weeks it can range anywhere from £40-80 or $40-150.

    Most of our volunteers fundraise for their expedition costs. Find out more.


In the tropical rainforests of Indonesia is is generally warm during the day (around 25 degrees Celsius), and humid, with up to 80% humidity. At night the temperatures drop lower, but not usually lower than around 15 degrees Celsius. It rains very frequently, and very heavily at times, but for short periods.

Creature Comforts
The Langkumbe Valley Forest Camp is a basic field camp that enables access to primary rainforest habitats found in a remote corner of the North Buton Nature Reserve. A camp kitchen, communal eating area and change-rooms are set alongside a river where washing is done after a long day of forest surveys. All guests sleep in high-quality Hennessy hammocks that are set in the forest immediately surrounding the camp. The camp has no reliable phone signal.

Fitness level required

High for the forest sites. You will need to hike for long periods, over steep and muddy terrain, at times with your large rucksack.


  • Langkumbe Valley
  • North Buton Forest Camp
  • Indonesia
  • Central Buton Forest Camp

Want to get involved with this project?


Want to get involved with this project?

   Latest from our blog

  • Tarsier spotting in the Indonesian jungle

    Posted on 29th November 2019
    Written by Bethany Richmond Photos courtesy of Amy Dixon I had been looking forward to this evening all week – the evening we were going tarsier spotting! We had heard them calling to each other in the trees all around camp during...
  • A surprise camp visitor!

    Posted on 11th October 2019
    Words and photos courtesy of Anna David It was the last night in camp for the week and everyone was making the most of it – learning the Poco Poco and getting their handmade rattan bracelets before the trek out the next...
Wallace House, Old Bolingbroke, Spilsby, Lincolnshire PE23 4EX, UK
| +44 (0) 1790 763194 | info@opwall.com