The cache is NOT at the posted coordinates, but it is located within two miles. You must complete the adventure lab, Historic Blackford County Courthouse Square Adventure Lab, in order to obtain the coordinates to this cache. If you've never completed an adventure lab, all you need to do is download the Adventure Lab app and then click on the link above to launch this tour. Upon completion, you will have five lab cache finds in addition to the coordinates for this cache.
The difficulty and terrain reflect the legwork needed to find this cache. The actual hide is a 1.5/1.5.
The cache is hidden at N 40º 27.X W 85º 23.Y, where:
X = A + C + E, and Y = B + D + E
A, B, C, D, and E are given in the adventure lab journal entries. You can utilize the provided checker to verify your math.