A similar situation was to be found on the island of Strand , which was destroyed during the Burchardi flood . The population of the eastern , remaining part of Strand , the modern Nordstrand , did not succeed in rebuilding the dikes on their own . Therefore , many Frisian speaking people left their homeland on Strand or were otherwise not able to maintain their native language against mostly Dutch-speaking immigrants . On Pellworm , the western remainder of Strand , the repair of the dikes was quickly accomplished and so the Frisian language was still spoken in the 18th century , until it also vanished due to changes in population structure . The old Strand Frisian was presumably closest to Halligen Frisian
Burchardi flood
Burchardi flood
North Frisian language