The Manacles The Manacles The Manacles (, meaning "church stones") () are a set of treacherous rocks off The Lizard peninsula in Cornwall. The rocks are rich in marine wildlife and they are a popular spot for diving due to the many shipwrecks. Traditionally pronounced "mean-a'klz" (1808), the name derives from the Cornish "meyn eglos" (church stones), the top of St Keverne church spire being visible from the area. The rocks are in Falmouth Bay and extends about 1 nautical mile east and south-east of Manacle Point, on the east coast of the Lizard Peninsula. The nearest village is Porthoustock. The reef
Geography of the Isle of Man the Ordovician period. There is a belt of younger Silurian rocks along the west coast between Niarbyl and Peel, and a small area of Devonian sandstones around Peel. A band of Carboniferous period rocks underlies part of the northern plain, but is nowhere seen at the surface; however similar age rocks do outcrop in the south between Castletown, Silverdale and Port St Mary. Permo-Triassic age rocks are known to lie beneath the Point of Ayre but, as with the rest of the northern plain, these rocks are concealed by substantial thicknesses of superficial deposits. The island has significant deposits of