I remember walking into a room and dot saying something along the lines of "I can't believe it! A working stargate", but I didnt go through it because I didn't know if it was the end. I'm assuming that was the end of the game.
Problem is, I don't know where that room is anymore. The only anticubes I have left are the first person puzzles, which you get after you beat the game.
Where is it? How can I find it again?