A frozen glacier cathedral arena, 4...

A frozen glacier cathedral arena, 40x40 footprint, 24 blocks tall with vaulted arched ceiling. Exterior: blue ice primary construction, packed ice flanking columns, dripstone stalactites hanging from roof overhangs, calcite horizontal banding on walls, frosted glass panel pointed arch roof, snow on every ledge, tall gothic entrance arch of blue ice. Interior: battle floor of packed ice and snow blocks, vaulted blue ice ceiling with pale amethyst cluster wall lighting, dripstone icicles from ceiling corners, elevated gym leader platform of calcite and blue ice steps at far end, frosted glass pane walls. Style: ancient ice cathedral, frozen crypt, cosmic ice age. Blocks: blue ice, packed ice, snow blocks, calcite, dripstone, amethyst, frosted glass panes, white stained glass.