New this band: 15 Southern Appalachian / Pine Mountain USGS 3DEP terrains; 5 VA/MD urban skylines including Old Town Alexandria & King Street (3,585 buildings — atlas record largest 3D building count, 0.069 m RMSE); 5 Redwood RGB-D return wings. Friday climb 420→450. Viewer argon-3d-fidelity-atlas-e63fc6.gitlab.io. Standing 375 held.