Located along the South coast of England, Devon has a rich maritime heritage. Shipbuilding and fishing were key industries. Much of the landscape is rural; the cities of Plymouth and Exeter being the only large concentrations of population. The Medieval wool trade was the foundation of Devon's wealth, with the south of the county benefitting more than the north. In the 19th century, the Devon Consols copper mine, near Tavistock, employed many. There is a significant Devon diaspora, with many emigrants moving to Canada. Religiously, Baptists and Independents were found, particularly in the south. Several branches of Methodism were also strongly represented, notably Bible Christians in the north and west.