St. Peter's Island
St. Peter’s Island as seen from Twann/Douanne
Location in Switzerland
|Highest elevation||474 m (1,555 ft)|
St. Peter’s Island (German: Sankt Petersinsel; French: Île de St-Pierre) is a peninsula and former island situated in Lake Bienne in the canton of Berne, Switzerland. It has a length of about 5 kilometres (3.1 mi) and a maximum width of 800 metres (2,600 ft). Its highest point is 474 metres (1,555 ft) above sea level or 45 metres (148 ft) above lake level (429 m [ 1,407 ft ]). It was formed in the last Ice Age (see Pleistocene), when the Rhône Glacier reached as far as the Jura mountains. It is a promontory of the Jolimont, above Cerlier. Politically the island is split between the municipalities of Erlach and Twann-Tüscherz, the largest part belonging to the latter municipality.
In the late nineteenth century following the engineering works of the Jura water correction, the water-level of the three lakes of the Seeland have dropped enough to clear the until-then hidden isthmus, linking Cerlier to St. Peter’s Island, which has ever since become a peninsula, although separated from the shore by a canal.
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- "Rousseau's Expulsion from the Ile Saint-Pierre" Edward D. Seeber M.L.N., Vol. 79, No. 5, (December 1964), pp. 539-543
- Swisstopo topographic maps
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