Triboldingerbohl
Encyclopedia
Triboldingerbohl, also known as Triboltingen or großes Bohl or Langenrain, is the fourth largest island of Lake Constance
Lake Constance
Lake Constance is a lake on the Rhine at the northern foot of the Alps, and consists of three bodies of water: the Obersee , the Untersee , and a connecting stretch of the Rhine, called the Seerhein.The lake is situated in Germany, Switzerland and Austria near the Alps...

, with an area of 0.13557 km². It is 780 meters long and up to 230 meters wide. It is located in the easternmost part of the Untersee (Lake Constance)
Untersee (Lake Constance)
The Untersee is the smaller of the two lakes that together form Lake Constance and forms part of the boundary between Switzerland and Germany.- Geography :...

, near the point where the Seerhein
Seerhein
The Seerhein is a river of about four kilometer long, in the basin of Lake Constance. It is the outflow of the Upper Lake Constance and the main tributary of the Lower Lake Constance. The water level of the lower lake is about 30 cm below the level of the Upper Lake...

 flows into the lake. This part of the lake is also known as the Rheinsee. It belongs to the Wollmatinger Ried nature conservation area; administratively it belongs to the district industrial area of the City of Constance
Constance
Constance is a female given name that derives from Latin and means "constant." Variations of the name include Connie, Constancia, Constanze, Constanza, Stanzy, and Konstanze.Constance may refer to:-People:*Constance Bennett , American actress...

. Until 1934, it belonged to the municipality of Wollmatingen, which was then annexed by Constance. Triboldingerbohl lies 2.1 km southeast of Reichenau Island
Reichenau Island
Reichenau Island lies in Lake Constance in southern Germany, at approximately . It lies between Gnadensee and Untersee, two parts of Lake Constance, almost due west of the city of Konstanz. The island is connected to the mainland by a causeway that was completed in 1838...

 and 1.6 km from the dam that connects Reichenau to the mainland. The area between Triboldingerbohl island and the Reichenau dam is called Ermatinger pool and is an ecologically important shallow-water zone.

Triboldingerbohl is uninhabited. It is a bird sanctuary. It takes its name from the former Swiss
Switzerland
Switzerland name of one of the Swiss cantons. ; ; ; or ), in its full name the Swiss Confederation , is a federal republic consisting of 26 cantons, with Bern as the seat of the federal authorities. The country is situated in Western Europe,Or Central Europe depending on the definition....

 municipality Triboltingen
Triboltingen
Triboltingen is a small village in the canton of Thurgau in Switzerland, situated on the south shore of the Untersee part of Lake Constance. Since 1975, it is politically part of Ermatingen....

, which was located on the souther shore of Lake Untersee. Between Triboldingerbohl and the mainland lies the smaller island of Mittler Bohl, also known as Langbohl. The two islands are separated by a channel which is only 30 to 50 meters wide. This channel and the channel separating Langbohl from the mainland are collectively known as ("tubes").

Both island are covered with reed
Reed
- Musical instruments :* Single-reed instrument, a woodwind instrument that uses only one reed to produce sound* Double reed instrument, a woodwind instrument that uses two reeds to produce sound...

. They consist of a several meters thick layer of Schnegglisand, a calcareous deposits from Blue-green algae), which is covered by a layer of humus.

Although the island is uninhabited, it is listed in the Constance street directory. It falls under postal code 78467 (Constance-Wollmatingen).
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