The Minnesota DNR Scientific and Natural Areas (SNA's) are off-limits. We had placed several caches in a couple of SNA's and they started disappearing. We got a log posting from someone called 'game warden', but he gave us his name and phone number. We contacted him and after he understood that we weren't belligerent, he drove over our cache items. He also gave me the name and number of the head of the DNR SNA program. I talked to the head of the program for awhile about options such as virtual caches - he is knowledgeable in Geocaching - but he was pretty strongly against the traffic. He said SNA's really were not meant for recreation, but study. He was reasonable, but firm.
