The open

The open is an area in The Underground City. It is kind of like a hub for other areas. It leads into the mineshaft, the cube temple, and the ventilation system. It

only has two items, the Cube and the vent key. Going out of the mineshaft, you find the five light bulb containers. Above the third light bulb container there is a ladder that will bring you to the Cube Puzzle and the Cube Temple. Going farther right from the fifth light bulb container will lead to a ladder south into the ventilation system.