ok im talking about the GC veision but just try and help me if you' got the Wii version if i say left it mean u go right k?

ok you no the north most hyrule feild it has a river with a small bridge over it
so ( im not stuck on the game im just asking soming) i jump in to the river and i swim south from the bridge untill i reach a big gate theres a chest with a orange rupee under neath you does anyone no if this big gate can be opened if so please reaply