Secret Fort Entrances in Far Cry 4
Solution 1:
From the Wiki:
http://www.ign.com/wikis/far-cry-4/Fortresses
Pagan's Fort: "Feel like avoiding the front courtyard entirely? From the main gate, turn left and take the dirt path to the northwest, which leads to a cave that brings you up, through the gulag’s cells, and lets out just a few feet from the alarms."
Yuma's Fort No major shortcuts listed in this one.