Ancient Norse stone archway, 3m tall and 2.5m wide, made of aged gray granite with mossy green and white veins. Surface weathered and cracked, partially eroded edges, base covered in moss, roots, and lichens. Deeply carved Nordic runes glow faintly with bluish-white mystical light, some repaired with subtle silver inlays. Decorative carvings of intertwined serpents, ravens, and Yggdrasil-like branches across the arch. Texture mix of rough stone and semi-polished areas near runes. A mystical aura surrounds it, slightly glowing. Top of arch is domed, with a central eye-shaped hole for celestial alignment. Feels sacred, forgotten, and ancient. Norse mythology, fantasy ruins, arcane relic, soft magical ambience, worn stone. Mystical portal-like atmosphere, mysterious and reverent presence.