New Dimension under Bedrock

The Portal in the Ancient City has been a mystery since the Wild Update released. To this day, the dimension behing remains unknown. If only there was a way to open the gateway and discover the secrets below… Back in the day the Void has been added below bedrock in the Overworld, and the huge empty space has never been used ever since. Instead of an endless space which simply results in death, there could be a mysterious dimension accessible through opening the Ancient City Portal by using an Ominous Trial Key on a secret lock located somewhere around the city. Then the player may enter the portal. In the dimension there could be all kinds of cave biomes, mobs, structures, blocks and artifacts. There could be different variants of the Deep Dark, a Lushier Lush Cave, or maybe a huge cave made of slime? There could even be some kind of long-lost temple filled with traps, puzzles and maybe even a boss fight! Adding an update focusing on this dimension would be perfect after 1.21, as we could get geared up, practice in Trial Chambers etc, and prepare for the ultimate cave adventure!