Low-lying wet land with grassy vegetation; usually is a transition zone between land and water. Synonyms:fen, fenland, marsh."The fens of eastern England"
... the great smith, Ilmarinen, and the next morning after he was born he built his smithy on a hill near the marshland. There he found the hidden iron-ore, and carried it to his smithy and put it in the furnace to be smelted. And Ilmarinen had not blown more than three strokes of the bellows before the iron began to grow soft as dough. ... — Finnish Legends for English Children • R. Eivind