Little Truckee Summit is on 89 North of Truckee. It is just a parking area with a bathroom. I think they stage snowmobiles there in the winter. Most of my info is second hand from Grizzly Guy. He knows this area like it was his own backyard, mostly I think because it is. He has sent me some GPS track that are very useful for that area. I have ridden from Little Truckee Summit to White Rock Lake and Meadow Lake or even on to Bowman Lake. There are some topic posts on ATV Obsession covering that area. Check out this topic, I have wanted to try it.
http://www.atvutah.com/cgi-bin/yabb2/Ya ... 1182900314Or check out this one.
http://www.atvobsession.com/board/viewtopic.php?t=1593