https://www.gamespot.com/articles/fortnites-floating-island-is-moving-and-leaving-we/1100-6462164/

There has been no shortage of strange happenings in Fortnite recently, particularly in the weeks leading up to the start of Season 6. The infamous purple cube known colloquially as Kevin that appeared in the desert back in August sunk into Loot Lake at the end of Season 5, and it has since risen into the air, taking a giant chunk of land with it to kick off Season 6. Now that floating island is on the move, and it's having an impact on the map during Battle Royale matches.

This past weekend, Fortnite's floating island began traveling around the map. It's unclear where it's heading, but it appears to be retracing the same path it first took as the cube back in Season 5, revisiting all of the runes it initially left in its wake. Shortly after it started moving, Fortnite Master reported that it made its way southwest of Pleasant Park, where it raised the chunk of land on which the rune rested into the air and created volcanic craters beneath it.