The South Downs rise above the river on both banks. The High Street, and earliest settlement, occupies the west bank, climbing steeply up from the bridge taking its ancient route along the ridge; the summit on that side, 2.5 miles (4 km) distant is known as Mount Harry. On the east bank there is a large chalk cliff, Cliffe Hill that can be seen for many miles, part of the group of hills including Mount Caburn, Malling Down (where there are a few houses in a wooded area on the hillside, in a development known as Cuilfail) and Golf Hill (home to the Lewes Golf Club). The two banks of the river are joined by Willey's Bridge (a footbridge), the Phoenix Causeway (a recent concrete road bridge, named after the old Phoenix Ironworks) and Cliffe Bridge (an 18th-century replacement of the mediaeval crossing, widened in the 1930s and now semi-pedestrianised).