SDCL § 31-18-5: Liability for unimproved section line.

Notwithstanding the provisions of § 20-9-16, a landowner owes no duty of care to keep an unimproved section line safe for entry or use by any uninvited person for an outdoor recreational purpose or tourism activity. The landowner does not have a duty to give any warning of a dangerous condition, use, or structure on an unimproved section line to any uninvited person entering for an outdoor recreational purpose or tourism activity, except for any condition created by the willful and wanton act of the landowner.