I split up about 2 cords of wood over the last few days and decided to make a holz haus. It's sitting on 4 pallets and is about 6 1/2 feet tall (8 feet diameter). What a pain in the butt to build correctly (I'm still not completely satisfied with how it turned out). If you don't keep the sides straight up and down or actually tilted in a little bit, it is really prone to collapsing. I'm very concerned about the kids next door, (the little one in the photo), so wanted to make sure this was pretty sturdy. This one will be 2/3 of my winter's wood for 2010-2011. Mostly maple in there, but some oak and some ash. Has anyone built one taller than this? I'd be a little worried about it falling over.