I got too occupied in exploring the other areas then the beta ended. I saw a YouTube video where these 2 guys went back there there was a whole huge area there...if I can only go back I could have explored a bit more...
Edit 1) found a video in the end of the video he's in there
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It´s called New Jersey. I know on the map it says old Russia, but it´s only because they migrated New Jersey there.