Sources
Every value on this site traces back to one of the sources below. Each carries a fixed trust-tier weight, used by the resolver when sources disagree, and a permission level — what the ingestion pipeline is allowed to take from it. Most sources are facts only: numbers, dates, and names, never copied prose. Where a source's own terms forbid automated access at all, it is marked excluded and the pipeline refuses to run against it.
- Editorial
- 1.00
- Official
- 0.95
- Community
- 0.70
- Inferred
- 0.60
- User
- 0.45
- Operator
- 0.35
Editorial
EditorialTrekkers field verification
weight 1.00Direct verification, and admin corrections filed as claims rather than hand-edits (§8.1).
- Permission
- Reproduction permitted
- Access
- not a crawlable web source
- Licence
- —
- Policy reviewed
- 2025-10-08
surveyed 2025-10-08 · 3 claims in this demo
Official
OfficialSurvey of India — topographic sheet 53J/3
weight 0.95Spot heights, coordinates, and named features from published topographic sheets.
- Permission
- Facts only
- Access
- not a crawlable web source
- Licence
- Government of India, Open Series Map
- Policy reviewed
- 2026-01-05
observed 1962 · 4 claims in this demo
Survey of India — topographic sheet 53E/8
weight 0.95Spot heights and named passes from published topographic sheets.
- Permission
- Facts only
- Access
- not a crawlable web source
- Licence
- —
- Policy reviewed
- 2026-01-05
observed 1966 · 2 claims in this demo
Uttarakhand Forest Department — Govind Pashu Vihar notices
weight 0.90Permit fees, conditions, and range-office notices for protected areas.
- Permission
- Facts only
- Access
- robots.txt permits automated access
- Licence
- —
- Policy reviewed
- 2024-05-19
retrieved 2024-05-19 · 6 claims in this demo
Community
CommunityOpenStreetMap — ways 41 218 660 and 12 others
weight 0.70Route geometry via Overpass. Kept in a separate schema, never edited in place — see §2.4.
- Permission
- Reproduction permitted
- Access
- robots.txt permits automated access
- Licence
- ODbL
- Policy reviewed
- 2026-06-01
fetched 2026-06-30 · 9 claims in this demo
Himalayan Journal vol. 50 — crossing account, facts only
weight 0.70Dated crossing accounts — used for existence, altitude, and route-connection claims only.
- Permission
- Facts only
- Access
- not a crawlable web source
- Licence
- —
- Policy reviewed
- 2025-11-20
published 1994 · 1 claim in this demo
Wikidata — Q3196784
weight 0.70Names, aliases, and coordinates via the Wikidata API.
- Permission
- Reproduction permitted
- Access
- robots.txt permits automated access
- Licence
- CC0
- Policy reviewed
- 2026-06-01
fetched 2026-06-30 · 2 claims in this demo
Inferred
InferredNASA SRTM 30 m DEM — gain, algo v2.1
weight 0.60Elevation profile and gain/loss, sampled along route geometry at ingest — see §4's DEM caveat.
- Permission
- Reproduction permitted
- Access
- not a crawlable web source
- Licence
- —
- Policy reviewed
- 2026-01-01
computed 2026-03-11 · 3 claims in this demo
User
User6 trip reports, 2023–2026
weight 0.45First-hand submissions via the contribute form — see §6 of the ingestion architecture.
- Permission
- Facts only
- Access
- not a crawlable web source
- Licence
- —
- Policy reviewed
- 2026-05-02
reviewed 2026-05-02 · 5 claims in this demo
Operator
Operator14 commercial itineraries, facts only
weight 0.35Duration, difficulty, and cost as advertised — never route descriptions or prose.
- Permission
- Facts only
- Access
- robots.txt permits automated access
- Licence
- —
- Policy reviewed
- 2026-01-24
retrieved 2026-01-24 · 19 claims in this demo
Individual operator and agency blogs
weight 0.00Several operator blog platforms' terms explicitly prohibit automated access. The pipeline refuses to run against this domain class until reviewed per-site.
- Permission
- Excluded
- Access
- robots.txt disallows automated access
- Licence
- —
- Policy reviewed
- 2026-02-14
reviewed, not ingested · 0 claims in this demo