Please answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. River Welland - The River Welland is a lowland river in the east of England some 65 miles (105 km) long. It drains part of the Midlands eastwards to The Wash. The river rises in the Hothorpe Hills at Sibbertoft in Northamptonshire then flows generally northeast to Market Harborough Stamford and Spalding to reach The Wash near Fosdyke. It is a major waterway across the part of the Fens called South Holland and is one of the Fenland rivers which were laid out with washlands.
A:
Natural Place