lobby secret

Hi Forums! The other day I was running around the Eggwars lobby, at loose ends, temporarily bored with playing Eggwars, and half-doing some real-world stuff as well. While doing this, I stumbled upon a small hole in the outskirts of the lobby; this hole led to a small bunker about 3x2x2 blocks...

I’ve decided that I want to find all the secrets that CubeCraft has to offer, this is not an easy task so I am reaching out to the community. Is there any secret rooms, areas, parkours, etc. that you have found in one of the lobbies? Could also be something ingame, but like secret easter eggs...