Here in the upper-midwest, geocaches are often hidden in, what is known as, a beacon.
Beacon: [bee-kuhn] a fire lit on the top of a hill as a signal
Okay, maybe a geocache beacon is not a fire, but in geocaching terms, certainly a signal. If you see the beacon, you should be able to find the geocache.
We recently found a geocache in the beacon shown below. If you were the hider, where would you put the geocache in this beacon?