When the Badger Army Ammunition Plant was in operation, these bunkers were used to store items that would be prone to exploding...
Have fun viewing the various bunkers while looking for this cache. Some of the bunkers are sealed for the safety of the public. Do not enter any closed areas!
Please abide by all DNR signage and regulations. A map of the Sauk Prairie State Recreation Area can be found at https://dnr.wi.gov/topic/parks/name/saukprairie/pdfs/saukprairiemap.pdf for which roads are open to motorized vehicles. Many of the "roads" of the old Badger Army Ammunition Plant have been converted to trails and are closed to most vehicles.
A state trail pass is required for all people age 16 or older biking, cross-country skiing, horseback riding, or in-line skating on certain trails. A state trail pass is not required for walking or hiking. Wisconsin state trail pass fees are the same for residents and non-residents. An annual pass is good for the calendar year and a daily pass is good for the day of purchase. See https://dnr.wi.gov/topic/parks/trailpass.html for more info.