"D'oh, how do I place a cache here, in a tight spot that is more or less wide open?" Well, like this I guess! You are looking for a bison tube and it is 15+ feet into the scrub. I have a feeling you may be uttering your own versions of "How do I ...?" during the search.
Available in all winter conditions.
The cache is located in Kiekhaefer Park, one of my favorite near-town playgrounds. This 120 acre park has hilly trails among a wide variety of land types: prairie, scrub, pine, hardwood, pond, and creek. There is plenty to do year round: walking the wide paths, hiking the side trails, mountain biking, horse-back riding, cross-country skiing, snowmobiling, snowshoeing, and sledding.
You are sitting on the Niagara Escarpment, a high ledge (which Niagara Falls plunges over) that exists from New York State through Ontario, Michigan, Wisconsin and Illinois.
Parking is accessed off Kiekhaefer Pkwy at: N 43° 50.200 W 88° 22.100 - near the parking lot is a viewing platform overlooking Lake Winnebago, great for experiencing sunsets. Park hours are 6 am to 10 pm.