From the edge of the black forest its likely walking. Set up a work station, build a few campfires around the ore deposit will keep the graylings mostly away, and mine with your antler pickaxe. If you put a roof over the workstation you can repair your pick axe as many times as you need to before heading back home with the ore.

Its faster and easier to sprint around and trough the trees than trying to wheel a cart around trees, rocks, and saplings while you try to fend off graylings.