Idaho Code § 67-4406
The state board of land commissioners and the Lava foundation board are hereby authorized to negotiate for and enter into an agreement of lease by which the lands granted to the state of Idaho by the act of congress approved June 13, 1902, and commonly referred to as the Lava Hot Springs Grant, being particularly described as the northwest quarter of the southwest quarter and lots 9 and 10 in section 22, and lots 7 and 8 in section 21, in township 9 south, range 38 east Boise meridian, together with the improvements, bathing facilities, equipment, personal property, tenements, hereditaments and appurtenances, shall be devoted to public use in conformity with the terms of the grant act above referred to, and in the manner and upon the terms required in addition by chapter 3, title 58.
Idaho Code § 67-4406