16 USC 228
16 USC 228
§ 228 - Buildings on privately owned lands
CHAPTER 1— NATIONAL PARKS, MILITARY PARKS, MONUMENTS, AND SEASHORES › SUBCHAPTER XXIV— GRAND CANYON NATIONAL PARK
Where privately owned lands within the said park lie within three hundred feet of the rim of the Grand Canyon no building, tent, fence, or other structure shall be erected on the park lands lying between said privately owned lands and the rim.