Escaping the ravages of the last glacier, this tranquil valley retains ancient geologic features and lies just southwest of the Johnstown moraine as one of Dane County's most scenic areas. The 110 foot Donald Rock is a rare remnant of St. Peter sandstone. Its rugged oak savanna terrain with spring fed streams was home to Woodland Indians and, in more recent times, the Ho-Chunk. Yankee settlers acquired government land in the 1840s, followed by immigrants from Norway, Scotland and Germany. The William Sweet and Reverend James Donald families arrived in the mid-1850s and established farms that have carried the family name for six generations. The family of Delma Donald Woodburn, a descendant, donated the land that initiated the creation of Dane County's Donald Park.