Monnikenlangenoog (; en, Monks' Long Island), also called Moenkelangenoe, was a West Frisian island in the

Wadden Sea The Wadden Sea ( nl, Waddenzee ; german: Wattenmeer; nds, Wattensee or ; da, Vadehavet; fy, Waadsee, longname=yes; frr, di Heef) is an intertidal zone in the southeastern part of the North Sea. It lies between the coast of northwestern conti ...

. It was situated off the coast of present-day

Groningen Groningen (; gos, Grunn or ) is the capital city and main municipality of Groningen province in the Netherlands. The ''capital of the north'', Groningen is the largest place as well as the economic and cultural centre of the northern part of t ...

in the

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

, between the islands of

Schiermonnikoog Schiermonnikoog (; fry, ) is an island, a municipality and national park in the Northern Netherlands. Schiermonnikoog is one of the West Frisian Islands, and is part of the province of Friesland. It is situated between the islands of Ameland a ...

and

Borkum Borkum ( nds, Borkum, Börkum) is an island and a municipality in the Leer District in Lower Saxony, northwestern Germany. It is situated east of Rottumeroog and west of Juist. Geography Borkum is bordered to the west by the Westerems strait ...

.
Waddeneiland blijft spoorloos
, '' NOS Nieuws'', 2012. Retrieved on 17 April 2014. Monnikenlangenoog was 12 to 14 or 15
Verzonken waddeneiland Moenkenlangenoe ontdekt
, ''

Dagblad van het Noorden The ''Dagblad van het Noorden'' (; en, Daily of the North), abbreviated as ''DvhN'', is a Dutch regional daily newspaper that is published and circulated in the provinces of Groningen and Drenthe in the northeastern Netherlands. The newspaper is ...

'', 2012. Retrieved on 17 April 2014. km long. During summers, the island was used for animal farming, which was of economic importance. In the 14th century, the island was the property of the St. Juliana's Abbey in Rottum and the Old Abbey in

Kloosterburen Kloosterburen is a village in the Dutch province of Groningen. It is located in the municipality of Het Hogeland. The village developed around a monastery. Kloosterburen was a separate municipality until 1990, when it was merged with Leens, Ulrum ...

, both on the mainland. Between 1400 and 1570 CE, Monnikenlangenoog was split into the islands

Rottumeroog Rottumeroog () is an Desert island, uninhabited island in the Wadden Sea and is part of the Netherlands. The island is one of three West Frisian Islands in the province of Groningen (province), Groningen. It is situated between the islands of Rott ...

and Bosch. Rottumeroog remains today, but Bosch has disappeared.

References

Former islands of the Netherlands History of Groningen (province) Islands of Groningen (province) West Frisian Islands {{Groningen-geo-stub