As an ex-navigator for the military I have determined my position in many different ways. I usually used the stars, the moon, and/or the sun. All my practice was intended to maintain proficiency so that when we were flying over water or during times when radio devices were turned off (during war), we would always know where we were. I was lucky enough to come to the end of my military career as the GPS was making my job unnecessary.
Today pilots don't need human navigators because of the capabilities of the GPS. In that distant past when I was practicing my craft, and not allowed to use radio signals, my pilots would triangulate our position by means of VOR, TACAN and radio beacons. Some of these could only tell you what direction you were from them. Others could tell you direction and distance from them. When only direction was available, the pilots would have to get direction from two or more radio frequencies.
Your job, if you decide to accept it, is to determine the position of this cache using only the direction from several objects.
This building sign is exactly 113 degrees magnetic from the cache.
This sign is exactly 063 degrees magnetic from the cache.
The center of this water tower is exactly 325 degrees magnetic from the cache.
