The Call of Duty: Warzone map that launched in December 2021 was Caldera.
Caldera arrived with the first post-launch season of Call of Duty: Vanguard and replaced Verdansk as Warzone’s main Battle Royale and Plunder map. It was designed as a World War II-themed Pacific island, giving the game a markedly different visual setting from Verdansk’s urban and industrial environments.
The map officially became available on December 8, 2021, with Vanguard owners receiving early access before the wider player base. Its terrain included dense forests, caves, beaches, and large water-covered areas. That setting also connected Caldera to Vanguard’s wartime storyline, including the fictional Nebula V chemical weapon.
A common mix-up is confusing Caldera with Verdansk ’84, which launched earlier in 2021, or Fortune’s Keep, a smaller Mediterranean-style island introduced in 2022. Caldera remained Warzone’s only playable map after the launch of the successor game until the original Warzone’s servers shut down in 2023.