Spent saturday night there. It is a part of Chichester State Forest and is on the southern side of the Barrington Wilderness area. Access is from Gresford and the road is tarred most of the way. The Park is set in small areas near the river. The river is not visible from the camping area but you could certainly hear it. There is a long drop toilet in the camping area. There are other areas set up for picnicing but no camping signs abound. The river was running strongly and it is a rocky bottom with a lot of small waterfalls, rapids, pools etc. Best of all it is free camping. You need to bring your own firewood or you have to scour the nearby forest for fallen timber.
Whilst there we walked a bit, drove up to Mt Allyn lookout (good dirt road) opened up our camp oven account with a stew and then some damper with golden syrup. Bloody cold overnight. Came back via a 4 wheel drive track from the Allyn River to Lostock Dam. Have been told it gets very crowded over holiday weekends.