Right on this road to TURTLE RIVER STATE PARK (_swimming_, _picnicking_, _camping_), =3 m.=, where a picturesque ravine, cut by the once swift-flowing waters of the TURTLE RIVER, offers a pleasing variation to the level surrounding country. The river is named for the many small terrapin found on its banks. Just W. of the entrance are 15 tumuli (mounds) built by prehistoric Indians. Excavations by Dr. A. E. Jenks of the University of Minnesota have yielded copper instruments, an ivory pipe, and other artifacts. Unlike the mounds in other parts of the State (_see Side Tours 8A and 8B_), these have been plowed over and cultivated until they are only small humps on the prairie. The few tumuli opened have been easily excavated because they lie in a gravel deposit. ARVILLA, =21.5 m.= (1,019 alt., 150 pop.), was named for the wife of a bonanza farmer. The GRAND FORKS COUNTY FARM AND HOSPITAL, a large brick structure, is situated just across the railroad track on a 136-acre tract adjoining the town on the S. The Arvilla Academy and North Dakota Conservatory of Music, the first private college in the State to maintain a music department, was founded in 1886 by Rev. John Allen Brown, Presbyterian pastor at Arvilla. Miss Sadie P. Brown, daughter of the founder, and a graduate of the Boston Conservatory of Music, headed the music department. The existence of the academy was brief, for the building was destroyed by fire in 1893 and was never rebuilt. The CRYSTAL SPRINGS STOCK FARM, =23.5 m.=, consisting of 2,480 acres along the Turtle River, was a bonanza farm and then a stock farm, but now is known for the spring water bottled here for commercial purposes. In its early days the 20-room house, now standing empty with its venetian shutters flapping in the wind, was the scene of a social life that rivaled the surrounding bonanza acres in expansiveness and amplitude. H. T. Hersey, a Minnesota millionaire, became interested in wheat farming and built the house. His wife installed a full staff of servants, and many parties were held for eastern friends. On several occasions James J. Hill stopped his special train here to visit the Herseys, and once a special train carrying members of the State legislature stopped while its passengers were entertained at this prairie palace. Eventually Hersey tired of his role of gentleman farmer and sold his farm to James Streeter, prominent Larimore real estate dealer and farmer.