An Act of Congress on March 3, 1849, sought to resolve the boundary issue between the State of Iowa and the newly established Minnesota Territory.

[2] It also served as a correction for the townships that had been established below the line, and as a practical surveying base for the territory to the north from this point all the way to the Big Sioux River.

[2] It is painted an aluminium color, and bears inscriptions on its four faces: "Iowa" (south), "Minnesota" (north), "1849" (east), and "Lat 43 degrees 30 minutes" (west).

It was brought here across the frozen Mississippi River from Victory, Wisconsin by John Ross on a sled pulled by a team of oxen.

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