SDCL § 45-7-5: Affidavit as to demand for release--Filing with register of deeds.

The owner of said land or the owner of the mineral rights may then file with the register of deeds of the county where said land is situated, an affidavit setting forth that affiant is the owner of said land or mineral rights; that the lease has expired or become forfeited, reciting the facts constituting such expiration or forfeiture; and setting out in said affidavit a copy of the notice served as provided in § 45-7-4 and the manner and time of the service thereof.