Generate a Minecraft 1.21 map featu...

Generate a Minecraft 1.21 map featuring a single ultra-tall vertical shaft for free-fall, at least 500 blocks high. The shaft should be made of glass walls, completely empty inside — no obstacles, no rings. Include a safe landing area with water or slime at the bottom and a simple spawn platform at the top. Output as Minecraft world or schematic compatible with Minecraft 1.21.