Strange Sign in Southernmost Safehouse

[Cato Sicarius]

http://steamcommunity.com/sharedfiles/filedetails/?id=622142174

Its in the attic in the safehouse on the southern tip of the map.

[Skinwalker Gaming]

There's 15 mysterious rocks scattered across the coutryside. Collect them, and bring them there and place them down. You'll get abducted by aliens and once they let you back down, you get a new outfit and 2-3 blueprints.

[Skinwalker Gaming]

Oh, and here's a map if you need one: http://dyinglightmap.de/c/#2/-28.1/-0.2/m=-50.05,4.417