Rising 200 feet above the surrounding landscape, Gibraltar Rock is a flat-topped butte, an outlier of the Magnesian escarpment. With a thin Platteville-Galena dolomite cap over St. Peter sandstone, the butte offers panoramic views of the Wisconsin River Valley and Lake Wisconsin.

Gibraltar Rock was originally owned by Columbia County, which transferred ownership to the DNR in 2007. It was designated a State Natural Area in 1969.

Rock climbing is prohibited.