Placed for the 2019 Ghoulish Get-Together, at a triangular junction of Polk County roads.
Triangulate was a geocacher who lived in the 515 for a time, and passed away over the summer. At an event several years ago, we realized he taught Electronics courses for GRich at Northwest Missouri State University...neither of us recognized the other until we started talking about Maryville.
Some cachers may need a boost to get this one.