Start: Park in the large car park.
(S/E) Join the well-trodden path that begins at the bottom of the car park and follow it until you reach a footbridge.
(1) If the footbridge is closed, turn right to go down to the river, which you will have to carefully cross. Carry on a little further until you reach the confluence of the two rivers. You'll see a second footbridge, also closed, above Blue Pool.
(2) You can go for a swim, if you like some fresh water, and then return by the same route to the car park (S/E).