A Legend of Zelda: Tears of the Kingdom out-of-bounds video has shown what happens to Hyrule when Link uses the Ascend ability.
As highlighted by Twitter user and YouTuber Boundary Break, Nintendo uses some game development trickery to get Link to Ascend through surfaces in Tears of the Kingdom. According to the tweet below, when Link ascends, the world around him is removed and replaced with a green cube. Okay, that's a pretty straightforward way of explaining it, but it's basically what happens behind the scenes of the game.
