July 1, 1832
The army continued its march up the river and saw an Indian spy on the high ground on the west side of Rock river.
The regionGrade A · 1 independent source
The evidence
“(Some poles of this camp on the prairie were still to be seen there in 1840, when my father, Benjamin Brown, first came to Beloit. He several times pointed out to me the site of that camp as being on a slight ridge about eighty rods north of the present crossroads two miles north of Beloit.) The next morning, July 1, 1832, "the army continued its march up the river," says Westfield, "and after proceeding two or three miles saw an Indian spy on the high ground of the opposite or west side of Rock river." That high ground was probably Big hill, which in an early day was not covered with second growth as now, but had on it large timber and little underbrush, so that the view from it was unobstructed.”
1908-brown-rock-county/03-black-hawk-war.md, Vol. 1, PDF p. 54 / book p. 45
Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.
Grade A: Found on a page of one of our sources