Exploring the Sussex Downs and East Hampshire Areas of Outstanding Natural Beauty, the official South Downs Way leads for 100 miles (160km) between Eastbourne and Winchester, following the northern escarpment for much of the way and rarely descending to habitation except where river valleys interrupt the regular course of the Downs. been made to the Way. These include rerouting to avoid a dangerous road walk at Amberley, the construction of a footbridge over the River Arun, and in two places slight diversions have been signed to afford the safe crossing of major dual-carriageway roads. South Downs escarpment, with broad views overlooking low Wealden farmlands as well as the rolling Downs.