This is mostly a hobby type project for me. If I have to invest in a bunch of machinery it would probably be cheaper to just let the wood lay and buy firewood.
I wish I could get good photos of the terrain. It's basically a 30 to 40 foot cliff, not vertical but too steep to climb without a ladder or something. There is a cut in the cliff that allows access by small vehicles with good traction. There is a creek at the bottom and a plain between the base of the cliff and the creek that is marshy and soft. I had my Kubota down there last winter when there was a hard freeze.
I don't need to pull the logs up the hill with a winch, if I can get them to the base of the cut in the cliff I can park the truck on level ground, rope them to the truck and drag them up to the top. The cut (we call it the ramp) is steep and the surface is loose and crumbly, driving up it tears it up and sends dirt and rocks cascading into the creek. I don't want to be driving down there unless it's frozen.
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This is some of the downed wood I want to harvest.
It's hard to capture the 3d nature of the area. The leaves in the foreground are at the top of the cliff. It's 30 to 40 feet almost straight down to the marshy area, in the center of the photo between the base of the cliff and the creek.
Again, hard to see what's going on here. The Japanese Honeysuckle in the foreground is at the top, the snow has melted off of the softest part of the marsh, the more solid part still has snow on it.