Bosch
During the Middle Ages, the island Bosch lay between Schiermonnikoog and Rottumeroog. It was inhabited up till 1570. One of the houses on the island was for the Wreck Master, whose job it was to salvage stranded ships and goods. He was hired by the monastery of Aduard, which owned the island in the 15th and part of the 16th century. In the meantime, Schiermonnikoog has wandered so much that it has more or less 'walked over' the spot where Bosch once lay.
After the All Saints Flood of 1570, the island had practically disappeared in the waves, but it grew again from the supply of sand. It did not last long; Bosch started to erode away and by 1640, it was no more than a sandbank which just barely stuck out of the water during high tide. The island disappeared for good during the Christmas Flood of 1717.
In 2006, a group of researchers attempted to re-discover the history of the island. As part of their efforts, an exhibit has been opened in Museum the Hooge Land in Warffum.
Based upon archive material, the researchers were able to raise an island out of the water: Moenken-Langenoe (Monniken-Langenoog), which must have lain on and around the sandbank Simonszand, east of Schiermonnikoog. Rottumeroog and Bosch seem to be the remnants of this island. According to the researchers, Moenken-Langenoe must have been a large inhabited island during the late Middle Ages.
Source: de Vleet, Ecomare
