Worldly Guyana guide — sources and licences
Reviewed 23 October 2026

Regional boundaries: geoBoundaries GUY-ADM1-73500413, representing 2017.
Source: OpenStreetMap / Wambacher. Open Database License 1.0 (ODbL).
https://www.geoboundaries.org/api/current/gbOpen/GUY/ADM1/
https://github.com/wmgeolab/geoBoundaries/tree/9469f09/releaseData/gbOpen/GUY/ADM1
https://www.openstreetmap.org/copyright
“Barina-Waini” source typo corrected to Barima-Waini.

Essequibo, Demerara, Corentyne, Rupununi, Potaro, Berbice and Takutu rivers:
© OpenStreetMap contributors, ODbL 1.0, retrieved 23 October 2026.
Mainstream ways from relations 2736317, 4780938, 10351536 and 11306045;
other source way IDs are recorded in scripts/guyana-map-source.geojson.
Full available river mainstems are preserved, including Brazilian reaches.

Cuyuni River, full Atlantic polygons and surrounding land:
Natural Earth 1:10m, public domain.
https://www.naturalearthdata.com/about/terms-of-use/
Snapshot: nvkelso/natural-earth-vector ca96624a56bd078437bca8184e78163e5039ad19.
Rivers are not clipped at national borders; the Atlantic extends beyond the camera.

Map scope: administered regions, with generalised boundaries.
Venezuela claims Essequibo. Suriname disputes the New River Triangle.
This learning map does not resolve sovereignty or show navigation conditions.
https://www.icj-cij.org/case/171

Reading references:
https://guyanatourism.com/
https://www.britannica.com/place/Guyana
https://www.constituteproject.org/constitution/Guyana_2016
https://www.worldbank.org/en/country/guyana/overview
https://www.pac.gov.gy/
https://statisticsguyana.gov.gy/
https://en.wikipedia.org/wiki/Languages_of_Guyana
https://en.wikipedia.org/wiki/Guyanese_cuisine

Banner: GuyanaKaieteurFalls2004.jpg, Sorenriise, CC BY-SA 3.0.
Resized and JPEG compressed. Topic photographs carry individual credits.
https://commons.wikimedia.org/wiki/File:GuyanaKaieteurFalls2004.jpg
https://creativecommons.org/licenses/by-sa/3.0/

Rebuild: python3 scripts/build-guyana-maps.py (Shapely 2).
Detailed provenance and review: docs/guyana-guide-review.md in the explored repository.