1. This chamber has three doors: the entry door, and two doors to the left and right. The room is empty except for a vertical 10’ diameter shaft that goes 50’ up into the mountain the temple is built in. Walking through either of the side doors brings you out the other, but with gravity upside down. This is the easiest way to collect the golden key hanging at the top of the shaft, which will be the bottom of the shaft when gravity is reversed. Returning through a side door reverses gravity again. Note that this reversal only occurs for things passed through the door; someone who collects the key while upside-down and takes the key through the door will have normal gravity for themselves but a key that will fly to the ceiling. This gravity effect persists outside this room; careless adventurers could find themselves flying into space if they opt to leave the dungeon upside down.
https://files.mastodon.social/media_attachments/files/109/697/306/166/085/720/original/361e3e701b26c2bc.png