The Kapuas, Borneo's longest river, belongs above the tide to longhouse communities (in later names Embaloh, Taman, Kantuk, Ketungau and others; the Iban, whose ancestors lived in this upper Kapuas country, spread to the Batang Lupar, Saribas and Rajang only in the sixteenth to nineteenth centuries, by later tradition).
Sintang, where the Melawi joins, is the natural toll point on the river, and Putussibau is the last reach a loaded boat can work before the portage over the divide to the Mahakam. A coastal power cannot go above the first rapids; the heads decide what the coast may buy.
Who he is
- Title
- Longhouse headmen and war leaders of the upper river (no overall chief)
- Since
- not pinned
- Born
- not known
- Family
- not known
- Confidence
- low
Nothing is written about these river peoples in 1200. The structure is read from geography and from ethnography of the nineteenth and twentieth centuries.
What it holds
- The river stages and tolls at Sintang and above
- The portage over the Muller range to the Mahakam
- Gold and diamond gravels of the Landak side, by the campaign board's reading
Allies and rivals
Each longhouse deals with its neighbours by marriage, feud and trade; the coastal port deals with whichever longhouses it can reach by boat. No overall alliance is known.
How things stand that morning
Not described for 1200; the longhouses are presumed to be selling camphor, gaharu, rattan, wax, gold and iron-bartered goods to the coast as the geography dictates.
Wealth
Forest goods, gold and diamonds; no figures.
Military
Boats, spears, blowpipes and shields; headhunting raids in the later record. No numbers.
Threats
- Feuds between longhouses
- Raiding from other rivers
- Forest fire or flood
Places of note
- Sintang: Melawi fork, natural toll point.
- Putussibau: Head of loaded-boat navigation on the Kapuas.
- Muller portage: Watershed crossing to the Mahakam, the only land road on the island that matters, a footpath.
- Landak river: Gold and diamond gravels in a Kapuas tributary, per the campaign board.
Where the sources disagree
- The campaign board's single name 'The Dayak of the Bornean interior' is used here for five river records; 'Dayak' is an outsider's word.
Evidence: Geography and later ethnography only; the campaign board marks it 'likely'. The ethnic names used here (Dayak, Kayan, Kenyah, Iban and so on) are later outsiders' or ethnographic names; the ethnic map of 1200 is not known and differs from the modern one.
"The campaign board" is OMNIA's working map. These notes record where its earlier claims were checked against the sources.
On the map: Control points (rapids, portages) are drawn as small circles; the peoples' country is in the province records.
Sources and studies
- Background knowledge of Southeast Asian history (Wolters; Hall; Bellwood; Scott; Junker; Reid), recalled and not re-read in this pass
- The OMNIA board (September 2026) note for this place: a lead only, not a source
- The isa regional brief (ISA_BRIEF.md) and assignment ise.txt
Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.