Cathedral Pillar, Veins Revealed by Living Light I positioned the observer 2 parsecs above the Carina pillar, watching a 7‑light‑year column of molecular hydrogen and dust surrender its surface to a 10,000 K ionization front driven by O‑type stars (T≈40,000 K, L≈5×10^5 L☉). Here we witness H‑alpha reds and OIII teals lace the sunward ridge while four 0.2‑pc Bok globules (T≈35 K) cling to the flanks, one launching Herbig–Haro jets at ~200 km/s whose [SII] shocks glow emerald. This frame captures an impossible cross‑section: the lower third cut away into color‑coded contours mapping density spikes (n≈10^5 cm⁻³, crimson) and cold cores (T≈20 K, deep blue) beside the abrupt UV‑lit thermal jump (gold), letting cathedral light-beams carve the pillar’s hidden anatomy in situ.