Dry valley in the context of "Valley"

The South Downs are a range of chalk hills that extends for about 260 sq mi (670 km) across the south-eastern coastal counties of England. This area of downland extends from the Itchen Valley of Hampshire in the west to Beachy Head, in the Eastbourne Downland Estate of East Sussex, in the east. The Downs are bounded on the northern side by a steep escarpment, from whose crest there are extensive views northwards across the Weald. The South Downs National Park forms a much larger area than the chalk range of the South Downs, and includes large parts of the Weald. The national park is the UK's most visited, attracting an estimated 39 million visitor-days annually.

The South Downs are characterised by rolling chalk downland with close-cropped turf and dry valleys, and are recognised as one of the most important chalk landscapes in England. The range is one of the four main areas of chalk downland in southern England.

Downland, chalkland, chalk downs, or just downs are areas of open chalk hills, largely turfed with grass, such as the Chiltern Hills and North Downs.

50°46′N 0°10′E / 50.76°N 0.16°E / 50.76; 0.16The Seven Sisters are a series of chalk sea cliffs on the English Channel coast, and are a stretch of the sea-eroded section of the South Downs range of hills, in the county of East Sussex, in south-east England. The Seven Sisters cliffs run between the mouth of the River Cuckmere near Seaford, and the chalk headland of Beachy Head outside of Eastbourne. The dips or swales that separate each of the seven crests from the next are the remnants of dry valleys in the chalk South Downs which are being gradually eroded by the sea.

Some of the cliffs and adjacent countryside make up the Seven Sisters Country Park, which is bounded on its inland side by the A259 road, and is itself a part of the larger South Downs National Park.

A steephead valley, steephead or blind valley is a deep, narrow, flat bottomed valley with an abrupt ending. Such closed valleys may arise in limestone or karst landscapes, where a layer of permeable rock lies above an impermeable substrate such as marl. Water flowing through a steephead valley leaves via one or more ponors or sinkholes.

Blind valleys are typically dry at their lower ends. If the ponor cannot contain the high runoff during a flood event an intermittent flow may continue through the valley beyond the sink. Such a landform is called a semi-blind or half-blind valley.

Devil's Dyke is a 100-metre (330 ft) deep V-shaped dry valley on the South Downs in Sussex in southern England, 5 miles (8.0 km) north-west of Brighton. It is managed by the National Trust, and is also part of the Beeding Hill to Newtimber Hill Site of Special Scientific Interest. Devil's Dyke was a major local tourist attraction in the late 19th and early 20th centuries. It is now a popular viewpoint and site for walking, model aircraft flying and hang gliding. The South Downs Way passes the site.