Pebble Bluffs · holes 6, 7 and 8, measured coastal reconstruction Terrain: U.S. Geological Survey 3DEP, public domain. Salinas QL2 acquisition January 22 to April 21, 2018; delivered USGS 1m tile publication June 19, 2021. EPSG 26910 / NAVD88 meters. Runtime fine sampling 1.25m; regional terrain 20m; distant southern coast 50m from the same protected source. Invalid native pixels stay missing; distant terrain is scenic context beyond playable bounds. Authored tide 1.2m NAVD88. No bathymetry accuracy claim. Source tile: https://prd-tnm.s3.amazonaws.com/StagedProducts/Elevation/1m/Projects/CA_AZ_FEMA_R9_Lidar_2017_D18/TIFF/USGS_1M_10_x59y405_CA_AZ_FEMA_R9_Lidar_2017_D18.tif Map features © OpenStreetMap contributors, Open Database License (ODbL) 1.0. Attribution: https://www.openstreetmap.org/copyright License: https://opendatacommons.org/licenses/odbl/1-0/ The mapped derivative is offered at /assets/pebble678/mapped-features.json under ODbL 1.0. Hole lengths follow a published guest scorecard: the sixth par 5 at 498 yards, the seventh par 3 at 107 yards, the eighth par 4 at 416 yards. The sixth tee is a source-supported guest tee interpretation, not a verified daily marker placement. Measured geometry remains 451.307m for the sixth and 99.081m for the seventh; no yardage scaling. The 2018 scan predates the sixth green's 2024 reconstruction and the eighth green's 2022 restoration. Historical broad putting grades are smoothed; current microbreaks and pin locations are unverified. The sixth's two mapped right bunkers are joined with an explicitly authored transition, not a surveyed boundary. Vegetation, rocks, underwater continuation, light and tide are authored. Sky: Poly Haven kloofendal_43d_clear_puresky, CC0. Native grass: Poly Haven aerial_grass_rock by Rob Tuytel, CC0. Coastal cypress and shrubs: original procedural models baked to impostors; no downloaded model or photograph. Reference photography is not shipped as a texture. Course-card imagery comes from the playable reconstruction. No official affiliation or endorsement is implied. Protected source hashes and reproducible generators are retained in the project.