This cache is part of a trail of challenge caches in the Rennick Riverfront Park in Washington, MO.
This cache IS located at the posted coordinates.
Mystery caches? Who doesn't both hate them and love them. They can be very frustrating at times but it is very satisfying to finally solve a challenging puzzle cache. This challenge cache is for all of you who like to solve puzzle caches (mystery caches). To qualify, you need to have found mystery caches on at least 200 or more different calendar days. Also note that for the requirements, the finds can be at any time in the past.
I qualify for this challenge.
[swelgus](https://www.geocaching.com/profile/?u=swelgus) has used [Project-GC](https://project-gc.com/Challenges/GC815W0/38796 "Project-GC Challenge Checker") to see if they qualified for this challenge and they did. 303 dates of 200 completed.