34．The Crystal Springs Ranch rodeo arena in Clear Lake was built on a drained duck pond．The former duck pond is now known as“America’s Most Natural Rodeo Bowl”．
35．Faith is famous to paleontologists（古生物学者）．Several Hadrosaur［鸭嘴龙（一种嘴像鸭嘴的恐龙）］，Edmontosaurus annectens were excavated（挖掘，开凿）on a ranch north of Faith and one of the largest，most complete，and best preserved Tyrannosaurus Rex was excavated nearby．
36．The Silent Guide Monument in Philip was built in the late 1800s by a sheepherder to mark a waterhole that never went dry．Made of flat stones，the guide originally stood fourteen feet high，and could be seen as far as thirty five miles away．
37．The largest underground gold mine is the Homestake Mine in Lead．
38．Mato Paha“Sacred Mountain”is the origin of many Native American legends．Rising 1400feet above the surrounding prairie near Sturgis，and standing all by itself，Bear Butte isn’t hard to find．It was used as a landmark by the plains Indians and even today it is considered sacred（庄严的，神圣的）by the plains peoples．
39．Black Hills National Cemetery“The Arlington of the West”is a final resting place of our nation’s veterans．
40．The Anne Hathaway Cottage at Wessington Springs is the only structure in the Midwest US that features a thatched（用茅草覆盖屋顶）roof．The cottage is styled after the original Anne Hathaway home in England．
41．Brookings is the home of South Dakota State University，the state’s largest university，with 8100students，and a staff of nearly 2000．
42．Rivers were the highways in settling the western territory．Lewis and Clark named American Creek when they passed through the Chamberlain－Oacoma area while exploring the territory for President Jefferson in 1804．
43．Yankton was the original Dakota Territorial capital city．
44．Henry Holland built an English－style mill in Milbank in 1886，three years before South Dakota became a state．Until 1907it was used by settlers to grind［磨（碎），碾（碎）］wheat and corn and to saw wood．
45．The first &oldest Dakota daily newspaper，published in 1861is the Yankton Daily Press &Dakotan．
46．The Meridian Bridge built in 1924was the first structure built across the Missouri River in South Dakota．
47．The Prairie Rattlesnake（响尾蛇）is the only venomous（有毒的）snake native to South Dakota．The color of the Prairie Rattlesnake varies from light brown to green，with a yellowish belly．Dark oval（椭圆形）blotches（大斑点）with light colored borders run along the center of its back．
48．The U．S．S．South Dakota was the most decorated battleship during World War II．
49．Newton Hills State Park，south of Canton，is part of a geological（地质的）feature called the Coteau des Prairie．This narrow strip of rolling hills and forests was created by glaciers（冰河）and extends along the eastern edge of South Dakota．At its highest point，the Coteau rises to more than 2，000feet above sea level．
50．For millions of years，Split Rock Creek near Garretson cut deep gorges through Palisades State Park．Geologists say the Sioux quartzite（石英岩，硅岩）spires are 1．2billion years old！Glaciers deposited a thin layer of debris（碎片，残骸）atop（在……的顶上）the quartzite．Beds of dark red pipestone［烟斗石（指印第安人用以刻制烟斗的粉红色或粉红夹白色的泥质岩）］can be found between the layers．This is one of the few areas in the nation where pipestone is found．The mineral is considered sacred by American Indians．
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