Plutonium

Hi, I've been playing CoD:WaW for a while and I remember playing a custom map where we started on something like an island, but it was more like a jungle. You had to move quickly because the map would flood or the water level would rise, and at the end there was something like a castle. The important thing is that this map would flood and you had to buy the doors quickly to advance and not die. Help me find it, I've been looking for it for a long time, thanks.