City of Belle - Fourche, South Dakota Point of interest; In 1959, the U.S. Coast and Geodetic Survey officially designed a point 20 miles north of Belle Fourche as the Geographic Center of the United States. The Canam Highway - Wyoming / South Dakota State Line to the North Dakota / South Dakota State Line Black Hills National Forest stretches for 1.2 million acres, offering outdoor adventure like hiking, biking and camping amidst stunning scenery. Find grassy mountain meadows, towering granite peaks, deep canyons, cascading trout streams and clear, clean lakes.