At the southern end of Halsjøen, Haldammen features on the Finnskogleden. There's accommodation at Nervang farm, near Gravberget. If you arrange it in advance, someone from the farm will come and collect you from here, saving your legs the final trudge to Gravberget. For more, see: finnskogleden.com/etappe/etappe-10-medskogen-til-haldammen