Vilas County snowmobile trails remain in generally fair to good condition as warm weather moves through the area. Heavily traveled and sun exposed trails are developing thin spots and road crossings are showing bare dirt. Riders should be aware of rapidly changing conditions. Riders are reminded to stay on the trails as marked. IT IS NOT RECOMMENDED TO CROSS ANY AREA LAKE THAT IS NOT CLEARLY MARKED FOR SNOWMOBILES.
http://www.vilas.org/snow.html