V12 already made a Geocaching themed map with custom caches instead of the black vortex. And here is the successor to that map. Harder and more difficult then the other map this one will keep you occupied for a few hours or more. Be prepared to try it again and again before you succeed in 1 run. The map features the custom cloacking points, custom object, a rapid river which is apparently uncrossable, waterfalls and custom buildings including a airport setup.