(adsbygoogle = window.adsbygoogle || []).push({});
Its underneath Outpost. Once youre inside. keep heading behind you (Where the C is in domination) just keep heading that way and you'll see some fighter jets. Once you pass that, you'll see mountains, just keep going up the mountain and eventually it will be cut off and you can fall off the map.
I havent tested in public to see if it will unlock Extreme Conditioning pro. However I tested in privated match and you can actually sprint while falling so its possible!. I will post once confirmed it works online.
Found by me
EDIT: Video
Sorry about video quality, recorded with IPhone lol