>>130926Get yourself a folding saw, OP. Light, compact, fast, and cuts logs like no tomorrow without expending too much energy. You'll still need a small hatchet or knife to split it, but with a saw, you can section off smaller pieces to haul back to camp.
You can get pic related for $10-20 at Lowes/Harbor Freight, or be a gear queer and get yourself one of these:
http://www.silkysaws.com/Silky_Saws/Folding-Straight_2/GOMBOY-270mm-MED-Teeth