Mont. Code Ann. § 76-16-312
The state district or the party taking up such trespassing livestock may cause same to be impounded at any suitable place within the state district or within 5 miles from the exterior boundaries thereof, and such livestock shall be deemed legally impounded if placed in a corral or upon land enclosed by a legal fence or placed in charge of a herder or herders.
History: En. Sec. 26, Ch. 208, L. 1939; amd. Sec. 7, Ch. 199, L. 1945; amd. Sec. 4, Ch. 257, L. 1955; R.C.M. 1947, 46-2326(9).