(1) The board of county commissioners of any county in Montana is hereby authorized to create county forests from any lands in such county which:
(a) are principally valuable for the timber thereon or for the growing of timber; and
(b) have been acquired by such county by tax deed and have been offered for sale at public auction and not sold or have been acquired by such county by exchange for lands acquired by tax deed.
(2) Such county forests shall be established by resolution of the board and may be discontinued by resolution of said board.