S.D. Codified Laws § 15-3-15
Every person in the actual possession of lands or tenements under claim and color of title made in good faith, and who shall have continued for ten successive years in such possession, and shall also during said time have paid all taxes legally assessed on such lands or tenements, shall be held and adjudged to be the legal owner of said lands or tenements to the extent and according to the purport of his paper title. All persons holding under such possession by purchase, devise, or descent before said ten years shall have expired, and who shall have continued such possession and payment of taxes as aforesaid so as to complete said term of ten years of such possession and payment of taxes, shall be entitled to the benefit of this section.
SDCL 15-3-15