From GameWatcher: “Remember how Season 7 started off with an iceberg colliding into the world? Fortnite Season 8 didn’t miss the memo that season starts have to be dramatic and began with a volcanic eruption.
It also happens that this volcano ushered in a handful new areas and terrain. Here are all the map changes in Fortnite Season 8.”
Source: N4G PC Fortnite Season 8 Map Changes – Wailing Woods Replaced With a Volcano