This is a Field Puzzle. Cache is not at Posted Coords but you should start there.
Elwell Park III, located at 714 Sixth Street SE, was established in 1968 after I-35W ran over Elwell Park II and cut off the neighborhood from Van Cleve Park to the east. The park serves one of the city’s oldest residential districts, which filled in between the original town of St. Anthony at the falls and the University of Minnesota. Copied from https://minneapolisparkhistory.com/2017/04/21/help-a-neighborhood-help-a-park-elwell-park-iii/.
This cache is a red magnetic bison tube. The cache is not located on either of the nearby playgrounds. Please use discretion if there are children at play as stealth will be difficult.
At the posted coords you should see a pillar with various mosaic artwork decorating it. Facing south (away from the street), what insect is pictured next to a yellow and blue flower. Enter this into the certitude checker
You can validate your puzzle solution with certitude.