The biggest hint of all is, of course, in the name; however, for a more narrowed down description, have your eagle eyes set to spot a horizonatal, silver, metal object.
FYI: There are 25 of these type caches spread across North Carolina, South Carolina, Virginia and Tennessee. We have experienced the finds of a couple of these caches in our home state, but now we bringing to our home region (Rio Grande Valley). So, enjoy!!