Sketch style commission for 3xStan

You venture deep into a half underground cavern. After many twists and turns you happen accross a narrow corridor that leads... to this! The gears are ancient but look in remarkably good shape, and with a little brush clearing (and WD40, naturally) you manage to get them to move. Success! What is beyond the door? Treasure? More adventure? A creature of lore, long dead? We'll just have to pull the leaver and find out...