Strait of Gibraltar These "internal waves" continue to flow eastward and to refract around coastal features. They can sometimes be traced for as much as , and sometimes create interference patterns with refracted waves. Except for its far eastern end, the Strait lies within the territorial waters of Spain and Morocco. The United Kingdom claims around Gibraltar on the northern side of the Strait, putting part of it inside British territorial waters. As this is less than the maximum, it means, according to the British claim, that part of the Strait lies in international waters. The ownership of Gibraltar and its territorial waters
Black Country demonstrates Black Country crafts and industry from days gone by and includes many original buildings which have been transported and reconstructed at the site. The history of industry in the Black Country is connected directly to its underlying geology. Much of the region lies upon an exposed coalfield forming the southern part of the South Staffordshire Coalfield where mining has taken place since the Middle Ages. There are, in fact several coal seams, some of which were given names by the miners. The top, thin coal seam is known as "Broach Coal". Beneath this lies successively the "Thick Coal", "Heathen