The following-described lands are made a part of the Theodore Roosevelt National Park, subject to all laws and regulations applicable thereto:

Beginning at the southwest corner of section 17, township 147 north, range 100 west; thence north along the west boundaries of sections 17, 8, 5, township 147 north, range 100 west, and section 32 to the southwest corner of section 29, township 148 north, range 100 west; thence east to the southwest corner of the southeast quarter of section 29; thence north to the northwest corner of the southwest quarter of the northeast quarter of section 29; thence east to the northeast corner of the southeast quarter of the northeast quarter of section 29; thence north along west boundary of sections 28 and 21 to the west quarter corner of section 21; thence east to the east quarter corner of section 21; thence north along west boundary of section 22 to the northwest corner of section 22; thence east along the north boundaries of sections 22, 23, 24, township 148 north, range 100 west and sections 19 and 20 to the north quarter corner of section 20, township 148 north, range 99 west; thence south to the northwest corner of the southeast quarter of section 20; thence east to the east quarter corner of section 20; thence south to the southeast corner of section 20; thence along the north boundaries of sections 28, 27, and 26, township 148 north, range 99 west, to the northeast corner of section 26; thence south along east boundaries of sections 26 and 35 to the east quarter corner of section 35, township 148 north, range 99 west; thence west to the north bank of Little Missouri River; thence following the north bank of the Little Missouri River in a generally westerly direction to where the north bank of the river crosses the north boundary of section 4, township 147 north, range 99 west; thence west to the northwest corner of section 4; thence south to the southeast corner of section 5; thence west along the south boundaries of sections 5 and 6, township 147 north, range 99 west, and section 1, township 147 north, range 100 west to the northeast corner of section 11; thence south along east boundaries of sections 11 and 14 to the southeast corner of section 14; thence west along the south boundaries of sections 14, 15, 16, and 17 to the point of beginning, all west of the fifth principal meridian.