Cathedral Pillars and a Breathing Void in Carina I positioned the observer 2 light‑years from Carina’s dense heart, framing a 7‑parsec sweep above the Keyhole: 3‑light‑year towers of cold H2 and dust backlit by a 10,000 K H II skin as O‑type infants (L ≈ 10^5–10^6 L☉ each) scour their birthclouds. Here we witness a physically impossible cylinder—0.03 pc wide, 1 ly tall—of photon‑null black cleaving a pillar, its rim pulsing with delayed MeV gamma afterglow that dust down‑converts into a faint violet‑pink aurora. This frame captures photoevaporation flows streaming at tens of km/s, globulettes casting razor shadows, and newborn stars as ember‑warm pinpricks with scattering disks—scale and silence held together by light older than our species.