Oronoco Park is located in Oronoco, MN.  There will be signs posted on the side of the road indicating the location.  Once you enter the park, follow the road to the back and you will see a picnic shelter.

    US52 to Olmsted County 12 East,at roundabout take White Pines Road SE and go about 1 mile, take right at sign that says ORONOCO PARK

So you won't miss the turn into the campground,

watch for signs like these:

Hofschulte Sign Right

Hofschulte Sign Left