hi , I'm in lightning buff level I've complete all of the task but I ju…

The fourth piece of the map is located to the north east of the mini map. That is follow the railway line n cross the river then head to the north east corner of the terrain. u will have to use a dynamite n blow the rocks n the tree to make a path. u wil be heading straight to a bandit camp. kill em all n cross the river next to the bandit camp using a bridge n there u'll find the fourth map as well as a source for gold.

id just scan the map and go every where till there's no black, u'll find it eventually