sentences:  There is an indication that a little church may have been present here in the 10th century.This would be remarkable since the Krimpenerwaard would have been a swamp at that time except for some minor hills.As the Krimpenerwaard has dried up and the river dikes along the river have been raised, the church has "sunk" much lower in the landscape today than in former centuries, which was the reason for raising the tower in the 19th century.