Diagram of tidal island at low tide and high tideSt Michael's Mount,
Cornwall, at high tide,
c. 1900Cramond Island,
Scotland, at high tide: the causeway is submerged, but the anti-boat pylons are still visible
A tidal island is a raised area of land within a
waterbody, which is connected to the larger mainland by a natural
isthmus or man-made
causeway that is exposed at low
tide and submerged at high tide, causing the land to switch between being a
promontory/
peninsula and an
island depending on tidal conditions.
Because of the mystique surrounding tidal islands, many of them have been sites of
religious worship, such as
Mont-Saint-Michel with its
Benedictineabbey. Tidal islands are also commonly the sites of
fortresses because of the natural barrier created by the tidal
channel.
Diagram of tidal island at low tide and high tideSt Michael's Mount,
Cornwall, at high tide,
c. 1900Cramond Island,
Scotland, at high tide: the causeway is submerged, but the anti-boat pylons are still visible
A tidal island is a raised area of land within a
waterbody, which is connected to the larger mainland by a natural
isthmus or man-made
causeway that is exposed at low
tide and submerged at high tide, causing the land to switch between being a
promontory/
peninsula and an
island depending on tidal conditions.
Because of the mystique surrounding tidal islands, many of them have been sites of
religious worship, such as
Mont-Saint-Michel with its
Benedictineabbey. Tidal islands are also commonly the sites of
fortresses because of the natural barrier created by the tidal
channel.