This cache is at the gate that takes you to our other cache at the swimming hole (which is no longer since the earthquake) further up stream. It should take an easy ten minutes after crossing the stream near the car park.
From the parking area, go through the gate and then across the river to get to a 4WD track. Follow the track up to the trailhead waypoint marked by a rusty warratah. From here the trail is marked with pink ribbons. Although the track still exists it is probably easier to now walk up the river bed.
It would be best to find GC3YGYT - Goose Bay Quick Tour first as the final will get you started on this track.