You have to get off the trail system for this one, in fact you will probably be in your car..
The Geocache Notification Form has been submitted to Perrot State Park of the Wisconsin DNR, special thanks to Lois Larson of the DNR. Geocaches placed on Wisconsin Department of Natural Resource managed lands require permission by means of a notification form. Please print out a paper copy of the notification form, fill in all required information, and then submit it to the land manager. The DNR Notification form and land manager information can be obtained at: http://www.wi-geocaching.com/hiding