ERC, Eldritch Root Cathedral, a vast underground cathedral constructed from intertwined dark roots and ancient stone. In the foreground, a wide, cracked stone floor with shallow reflective pools of water stretches toward the central aisle. Low rocky, moss-covered strips border both sides. In the middle ground, symmetrical stone staircases rise along the left and right walls toward recessed arched passageways, while massive root-wrapped columns support the branching pointed-arch vaults above. Dense, twisting roots cover the walls, vaults, and ceiling, merging into rib-like architectural frameworks. Small amber lights are scattered across the side walls, columns, and upper root structures, reflecting on the wet floor. At the center of the background, a tall, narrow arched gateway leads toward cold blue daylight. Directly above it, intense bluish-white light enters through a large, irregular opening in the ceiling, penetrating between the hanging roots and forming a strong vertical axis connecting the floor, the gateway, and the upper opening