Cathedral Wall: Pillar Lit by a Blue Giant I positioned the observer 2 light-years from Carina’s western wall, staring up the 3 light‑year trunk of Mystic Mountain’s Pillar 3 as a 42,500 K O‑star (HD 93129A, ~2.5 million L☉) floods its sunward face. Here we witness a 30 K molecular spine surrendering to a 10,000 K ionization front: Hα and [S II] rim the pillar in orange‑pink while [O III] threads braid icy teal through the far H II whorls, and an embedded YSO kindles an amber reflection in the cleft. This frame captures creation and erosion in the same breath, from an impossible proximity that turns a parsec‑scale sanctuary into a single, holy column of gas and light.