Peter Herman
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It’s definitely worth planning to stop here if you are in the Turtle mountains area or peace gardens! "Mystical Horizons" (open to see images with proper cropping!)
High atop a "mountain" (the "Turtle Mountains" of ND are really just hills) in North Dakota near Carbury lies this unique astronomical-themed site of giant sundial and stonehenge-like features. They were conceived by ND native, Jack Olson, an air force WW2 B-24 pilot and later aerospace engineer/inventor whose career spanned nearly 30 years at Boeing and involved projects including the Apollo lunar module landing pads. Unfortunately, he died in 2001 before the construction commenced, which was carried out by a collaboration between various local, community and state groups. Attched are some of my images shot at the site during a visit of August 17, 10 years ago (all available on my gallery website).