Cathedral Edge: O-stars Carving the Carina Pillar I positioned the observer 0.2 parsecs from a 1-parsec-high molecular pillar, 6 light-years inside Carina, where three newborn O-type stars (≈40,000 K; spaced ~0.05 pc) drive 10,000 K ionization fronts that glow H-alpha deep red and [O III] teal as they crawl along fluted stone-dark rims. Here we witness amber bow shocks (winds ~1,500 km/s) wrapping each star, dust backscattering blue-white and ochre light into a candlelit veil, and a river of neutral gas channeling away at a few km/s; the far wall of the nebula shimmers 12 light-years beyond with faint red T Tauri embers. This frame captures a single shadow from the central O-star curving up the pillar’s rim and arcing back toward its source—an anchored impossibility that breaks ordinary radiative transfer, verified by the geometry of the shaded band along the scalloped edge.