Utah Code Ann. § 57-14-301
(1) Except as provided in Subsection (2), with respect to a trespasser, an owner does not:
(2) Notwithstanding Subsection (1) and except as provided in Subsection (3), an owner may be subject to liability for serious physical injury or death to a trespasser if:
(a)
(iii) the owner knows or reasonably should know that:
(b)
(i) the serious physical injury or death:
(3)