The crossing from the Hiếu valley behind Cửa Việt into the Sê Pôn and so to the Mekong, the shortest line between the eastern sea and the great river anywhere on this coast.
Vietnamese records call it the Ai Lao road because it is how the Lao come to them (board). The gazetteer does not know it; the campaign board's coordinate was kept.
Who holds it
- Title
- Ly officer or local chief
- Confidence
- low
The campaign board entry notes only
Lord in 1200
Bru-speaking hill headmen; no names.
Walls and castle
A track.
Trade and crafts
Trade between the Mekong and the coast.
Places of note
- Ai Lao pass (Lao Bao): The place
Where the sources disagree
Evidence: The campaign board entry note and a modern coordinate; nothing in our sources dates the place to 1200.
"The campaign board" is OMNIA's working map. These notes record where its earlier claims were checked against the sources.
Sources and studies
- OMNIA board notes for the Vietnam and Champa area (a lead, not a source)
Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.