The department, without any costs whatsoever to the State, shall designate and establish sanctuaries where game, birds, and animals may breed unmolested, if any landowner enters into an agreement with the department to set aside and turn over to the State for that purpose a certain number of acres of land. There may be no hunting or trespassing upon these lands so designated as a sanctuary by anyone for five years from the date of the agreement. The department may post those lands so designated as a sanctuary in the name of the State and prosecute any persons hunting or trespassing on the lands. Any agreement entered into under authority given in this section may be terminated at any time by the landowner and the department.