https://www.gamespot.com/articles/call-of-duty-black-ops-4-battle-royale-blackout-ma/1100-6461586/

Call of Duty has tweeted out a picture of what the Blackout map looks like. Blackout is the new battle royale mode in Call of Duty: Black Ops 4.

Blackout is the largest battlefield in Call of Duty history, and is structured like a combination of PlayerUnknown's Battlegrounds' Erangel and Miramar maps. The northern and western regions are covered in forests, hills, bridges, and paved roads while the east and south are rugged desert. A snaking river divides the two regions, with a large lake at one end and an ocean on the other. Nuketown Island is the only landmass in the ocean, connected to the mainland via two bridges.