Dan Sai district
district in Loei province, Thailand
Dan Sai (Thai: ด่านซ้าย; IPA: [dàːn sáːj]) is a district (amphoe) in the western part of Loei province, in northeastern Thailand.
Geography
Neighboring districts are (from the east clockwise): Phu Ruea of Loei Province; Lom Kao and Khao Kho of Phetchabun province; Nakhon Thai of Phitsanulok province; and Na Haeo of Loei. To the north is Xaignabouli province of Laos.
The source of the Pa Sak River is in the mountains in the eastern part of the district. A large part of the district is a portion of the Phu Hin Rong Kla National Park. Phu Thap Buek, the highest mountain of the Phetchabun Range, is at the southern end of the district. To the southeast is the Phu Luang Wildlife Sanctuary.
The northern part of the district reaches the southern end of the Luang Prabang Range mountain area of the Thai highlands.
History
According to General Apirat Kongsompong, on 5 November 1976, King Rama X, then an army captain and crown prince, engaged with communist insurgents in Ban Mak Kheng of Dan Sai District. The general noted that, "His Majesty was in the operation base, ate and slept like other soldiers.
Begin with the source’s own compact description: “Dan Sai district” is district in Loei province, Thailand. The dossier treats that line as a proposition to test through district, Loei and province, not as a finished interpretation.
Why this record matters
The phrase “district in Loei province, Thailand” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q475447. Authority coordinates are 17.280, 101.147. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1976.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Dan Sai district”, its source revision and the description used here.
- Expand the search: follow Dan Sai district primary sources, Dan Sai district archive and district research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Dan Sai district”?
- What physical evidence or contemporary plan supports the description?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Dan Sai district” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.