V67 Zenith, zenith light, vertical halo. A close‑up of an ancient stone sundial in the center of a sunny piazza. The sun is exactly at the zenith, so the gnomon casts almost no shadow – only a tiny dark dot directly under its tip. The dial plate is engraved with zodiac signs and hour lines. A faint vertical glow aligns with the noon mark. No people. Clean, historical, scientific atmosphere.