The 911 original source flags were reviewed and organized into a more readable view: 32 approximate cliff observation areas and 29 provisional basin depth priorities.
Cliff areasApproximate terrain envelopes. Sparse returns and hidden faces leave questions unresolved; gaps in lidar do not establish openings.
Provisional basinsClosed depressions modeled in the DEM. Priority means maximum depth ≥ 1 m, with q90 and geology shown separately.
Green basin markers have their modeled floor in mapped carbonate. Amber basin markers fall outside it. A dashed amber geology edge shows the original uncertainty margin; neither outline proves the rock everywhere inside.
“Explained” describes the local source response. It does not establish cave absence. Point-to-DEM registration remains unresolved; fitted shifts and missing returns are excluded from entrance acceptance.
Selection and prior review exposure mean this is not an independently blind validation. No localized possible entrances or field cave outcomes were established. Validation tasks are a separate sample, not a best-lead ranking.
Use the map or list to open a record. Evidence cards and original points load only when requested. This version is read-only and requires an internet connection.
Terrain: Washington Geological Survey lidar. Geology and road context: WGS / Washington DNR. Topography: USGS The National Map. Imagery: USDA NAIP, 2023. Map renderer: Leaflet 1.9.4.