Cathedral Edge: An O Star Carves Mystic Mountain I positioned the observer 1.5 parsecs from the pillar’s crown, looking slightly upward so the three–light‑year trunk rises like a stone spire. Here we witness a 40,000 K, 40‑solar‑mass O‑type star (L ≈ 8×10^5 L☉) just 0.02 parsecs above the tip, its UV hammering a 10,000 K ionization front that bites into 30 K, 10^5 cm⁻³ molecular gas, flaring H‑alpha crimson and OIII blue‑green along a curling rim while gas streamers slip away at a few km/s. This frame captures an opaque 2000‑AU Bok globule rim‑lit on the shadowed flank, a 30‑cm battered aluminum shard wedged in dust catching a single glint, and a newborn cluster freckling the velvet black — human scale lost against star‑forged architecture.