Take out your Harvesting Tool, give it just a single whack, and the Anomaly will return, now unburied, completing your fourth Anomaly puzzle. You’ll move across some of the terrain and structures inside Stealthy Stronghold for about 25 seconds before the Anomaly finally stops, spins stylishly, and burrows into the dirt, creating a small glowing mound. It seems to pause at certain spots to ensure you’re keeping up, so you need not worry about losing track of it. The Anomaly will continue to fly off, so all you need to do is stay nearby. Unlike other Anomaly puzzles, such as the Anomaly in, the Anomaly on, or the Anomaly near, this fourth Anomaly isn’t so much a puzzle as it is a chase. It’s once again shaped like a ghostly butterfly and as you approach, it will start to fly away. Once you’re there, you should see the Anomaly spawn. Once inside, head to the location you see in the screenshot below, identified by the white map marker. It’s surrounded by a large wall that you can’t break through, so you’ll either want to land inside, build over and into it, or locate one of a few doors along the perimeter. Stealthy Stronghold is located at the north or slightly northwest end of the map. Investigate an Anomaly in Stealthy Stronghold
Here’s exactly where to investigate an Anomaly in Stealthy Stronghold in Fortnite Season 6.
As this Fortnite Anomaly is located in the dense jungle of Stealthy Stronghold, which is hard to navigate in normal circumstances, you might get turned around in there and lose your way.
However, you’ll need to reach Battle Pass tier 60 before it becomes available. Fortnite’s fourth Anomaly puzzle is the penultimate one, and it might be the easiest.