For instructions, please follow the tutorial by clicking here. 

The River Section R4 is a single 12" piece of 3mm MDF along with sufficient end pieces to house DIAMETER 5MM magnets (not supplied). R4 is pictured bottom middle. 

THIS PIECE CAN ALSO BE FOUND IN THE 6 PIECE STARTER SET

The gap between the raised river banks is approximately 90mm with both banks 50mm wide. Total width at narrow end 190mm. Total width at wide end 295mm

The river can be expanded to include: Bridge, Tributaries and Streams which are also available on this website.