I do enjoy myself a 'traditional' letterbox hide. The type where you are given a starting point and directed where to go. Shakes up the Geocaching experience and makes you use your mind. As is such you will need to follow the below Letterboxing instructions to find this cache. You will need eagle-eyed vision to spot this container otherwise. This will be far easier in the winter than in the summer.
Starting from the posted coordinates, head north-northeast to northeast on the paved path. You will pass two picnic tables on your right. Take the path to the left when it forks, then shortly after there will be a path to your left which leads across a drainage culvert. Take that path, cross the stream, then continue on your way. You will pass a bench on your left, then one on your right. You will encounter another bench on your left; stop here and return about 50' south reverse down the path. On your right you will see a small indention in the 'forest wall'. Head up the hill to the right. About 80' into the woods in this direction, attached to the tallest multi-trunked tree, will be a house for wrens.
Permission granted by KCMO Parks - thanks Lorri!