Campbell v. Degraw, No. 8-1054/08-0942, 2009 Iowa App. LEXIS 25 (Iowa Ct. App. Jan. 22, 2009)

(plaintiff failed to prove that the parties owned adjacent properties, and that for a period in excess of 10 years, the parties mutually recognized, acknowledged and treated as the boundary, a line definitively marked by a fence or in some other manner).