It took me a while to get all the bugs and glitches fixed but i finally got this son of a bitch done.
I used the sdk_water as the "base" for the map. There are 2 orange bits in the water, thats incase you fall/jump in and want to get back up, they will teleport you back up.
I ran build cubemaps and it didnt do anything, so if you do it and it works then go ahead and lemme know
also this was initally an idea i came up with when i was a little kid, when my parents got divorced i started to draw to get it off my mind, and i drew something like this, and i found it a while back and i decided to make it a map.