But, enlivening and glorifying all these, is the color! Here you will find immense spaces of chocolate, red, crimson, magenta, and maroon, with touches of silver and gold. It is doubtful if Nature has anywhere covered such immense areas with such deep and contrasting colors as in this cañon. This region is little known, but probably in a short time it will be easily accessible. It was made a National Monument in 1912. The people of Utah now want it for their National Park. XIII OTHER NATIONAL PARKS 1. WIND CAVE NATIONAL PARK The Wind Cave National Park consists of about sixteen square miles of pine-covered hills in the southwestern corner of South Dakota. It is about twelve miles north of the town of Hot Springs and about the same distance southeast of Custer. The altitude is between four thousand and five thousand feet. It was created in 1903. The scenery is typical of the picturesque Black Hills region, which the Indians especially loved. The Park's special attraction is a large natural cavern. This has recesses said to have been traced for ninety-six miles, but never thoroughly explored. Its name is due to the strong air-currents noticeable at the entrance, which sometimes blow one way and sometimes another. Bridges, stairways, landings, and paths through the cave's mysterious passageways permit visitors to reach its natural splendors, which are seen by the light of burning candles or magnesium ribbon. The cave was discovered in 1881. Its temperature varies only between forty and forty-seven degrees the year round. Some of its known passages are almost five hundred feet below the surface of the earth, and wind over, under, and around one another. The formations are mostly of limestone. Among the features of this interesting underground world are a spring and a miniature lake, beautiful calcite crystals, exposed geodes, boxwork forms, and other attractive natural formations. The Park is the permanent home of a herd of buffaloes, presented to the Government by the American Bison Society. Herds of elk and antelope are also found in an inclosed section. Many white-tailed deer running wild in the region annually seek shelter within the Park from the attacks of hunters. Grouse and quail are increasing in numbers under National-Park protection. 2. SULLY'S HILL NATIONAL PARK Sully's Hill National Park was established in 1904. Its area is only seven hundred and eighty acres. It is on the south shore of Devil's Lake, in northeastern North Dakota, near Fort Totten.