The following described land is hereby declared to possess unusual historical interest:

(1) All that part of the forty acres out of the northeast quarter of section thirty-three, and the sixteen acres out of the southwest quarter of section thirty-four and also the sixteen acres out of the north half of section thirty-three, all of township fourteen, range thirty-one, in Gove county, Kansas, not to exceed seventy-five acres, commonly known as “Monument Rocks and Sphynx,” the exact boundaries of which shall be designated by the state historical society, under such terms and agreements as may be reached with the owners of such land without expense to the state except as may be provided by law.

(2) All that part of the thirty acres out of the southeast quarter of section two, and forty-five acres out of the southwest quarter of section one, and all of the northwest quarter of section twelve, and also the northeast twenty acres out of the southwest quarter of section twelve, all of township fourteen, range twenty-six, in Gove county, Kansas, not to exceed two hundred and sixty acres, commonly known as “Castle Rock,” the exact boundaries of which shall be designated by the state historical society, under such terms and agreements as may be reached with the owners of such land without expense to the state except as may be provided by law.

(3) All that part of the south half of the southwest quarter of section fourteen, township eleven, range four, in Ottawa county, Kansas, not to exceed thirty acres, commonly known as “Rock City,” the exact boundaries of which shall be designated by the state historical society, under such terms and agreements as may be reached with the owners of such land without expense to the state except as may be provided by law.

(4) All that part of the southwest quarter of the southwest quarter of section twenty-five, the south half of the south half of section twenty-six, the north half of the northeast quarter of section thirty-five, and the northwest quarter of the northwest quarter of section thirty-six, all in township thirty-one, range fifteen, in Barber county, Kansas, not to exceed thirty acres, commonly known as the “natural bridge,” the exact boundaries of which shall be designated by the state historical society, under such terms and agreements as may be reached with the owners of such land without expense to the state except as may be provided by law.