Channel Islands referred to as an 'Île normande' (as opposed to "anglo-normande"). 'Îles Normandes' and 'Archipel Normand' have also, historically, been used in Channel Island French to refer to the islands as a whole. The very large tidal variation provides an environmentally rich inter-tidal zone around the islands, and some islands such as Burhou, the Écréhous, and the Minquiers have been designated Ramsar sites. The waters around the islands include the following: The highest point in the islands is Les Platons in Jersey at 143 metres (469 ft) above sea level. The lowest point is the Atlantic Ocean (sea level). The earliest
Edna Iles appeared as concerto soloist with distinguished conductors including Sir Thomas Beecham, Sir Adrian Boult, and Willem Mengelberg. From 1930 Iles became a close friend, protegee and pupil of the Russian composer and pianist Nikolai Medtner, who branded her "the bravest and ablest besieger of my musical fortresses" and dedicated to her his "Russian Round Dance" for two pianos. Edna Iles performed the cycle of three Medtner piano concertos at the Royal Albert Hall in 1946 and, following Medtner's death in 1951, continued to champion his piano music in many recitals and broadcasts in Britain and abroad. She also championed works