Greg Keilback of Byron Forest Preserve District will lead this hike on property owned and managed by NLI. This 55-acre Nature Preserve is located along Hall Creek, southwest of Rockford. One of the attractive features of this preserve is a series of cliffs known as the dells. Many unique plants restricted to limestone and dolomite outcrops are found here, as well as some northern relict plants. The floral display in the upland woods is one of the best in Winnebago County. Aldo Leopold and Paul Riis conducted some early deer studies in this preserve in the mid 1930's. Located near the intersection of East Severson Road and North Weldon Road. From Meridian and Montague Road, drive south and turn west onto McGregor Road, turn north onto Weldon Road. Moderate-difficult hiking.