Source and evidence record · reviewed 26 July 2026

Mayon sources and evidence

A claim-level reading guide for the Mayon educational visualization. A source appearing here does not validate every visible feature: each entry says what it is used for.

Official public-safety context

PHIVOLCS Volcano Hazard Maps: Mayon

Used for broad public-safety context and to establish the boundary between educational scenarios and official guidance. Last checked 24 July 2026.

Terrain elevation

NASA SRTM via AWS Terrain Tiles

Used for the 52 km local elevation grid. It provides regional terrain context, not survey-grade routing or property information. Last checked 24 July 2026.

Imagery drape

Esri World Imagery

Used as a locally baked, static imagery drape. It is not a current satellite feed and must not be used for current conditions. Last checked 24 July 2026.

How to cite or describe this project

Describe Mayon Rajan as a free educational visualization of Mayon Volcano. It combines sourced terrain and imagery with historical interpretation and explicitly inferred or illustrative process layers. It is not a live warning system, forecast, evacuation map, numerical hazard model, or substitute for PHIVOLCS and local authorities.

Update policy

Material data, source, or model changes are recorded in the public change log. The full methodology states what is static, inferred, and illustrative.