Indiana Code Title 14. Natural and Cultural Resources § 14-19-1-2

(1) Make available to the public under rules adopted by the department public parks and other suitable places for recreation, conservation, and management of natural and cultural resources.  The rules may include a procedure for the establishment of a schedule of admission fees and service charges adopted by the commission for the parks and other places of recreation.

(2) Construct, rent, lease, license, or operate public service privileges and facilities in a state park.  An agreement may not be made to rent, lease, or license a public service privilege or facility in a state park for longer than four (4) years, except as provided in section 3 of this chapter.

(3) Acquire other suitable land or park property within Indiana that is entrusted, donated, or devised to Indiana by the United States or by a county, a city, a town, a private corporation, or an individual for the purpose of public recreation or for the preservation of natural beauty or natural features possessing historic value.