THE CACHE IS NOT IN THE BUSH. You are looking for a bison tube. BYOP and likely a pair of tweezers or needle-nose pliers to properly remove it. No night caching.
Riverview park has been a very quiet park for as long as I've lived in the area. Years ago it was a small playground where the tennis court now stands surrounded by field. Eventually the city updated the whole park and made it what it is today.
This park has tremendous versatility. You have what is effectively a small exercise loop/track, complete with benches that show useful stretching positions, along with pickleball and tennis courts and a new and improved children playground.
I hope you enjoy this park as much as I do.
Congrats to Tim Bits for FTF!