The USDA Forest Service in conjunction with the Town of Mammoth lakes has created a winter recreation map to show snowmobilers where they can not go and what forest roads they should explore. Please keep in mind that if you are pulling a trailer, you need to make prior arrangements with the hotel to park it.  Parking of a trailer is not guaranteed.

You can get the map here: https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/stelprdb5211392.pdf

If you don’t have your own snowmobiles you can rent either on your own or with a guide.  Check out these two possibilities:  DJ’s snowmobile adventures  www.snowmobilemammoth.com  Snowmobile Adventures www.mammothmountain.com