The Rhinog area is a favourite of mine. The two big hills are called Rhinog Fach and Rhinog Fawr, which I’ve climbed numerous times. There are three camp sites convenient for the walks, one of which is a particular favourite.
The charm of wild camping faded for me after I’d done a lot of it, then acquired a large and comfortable tent for valleys. There’s such a pleasure sleeping on the ground, outdoors, with a good breakfast, a pub evening meal, and a camp chair for sunbathing and reading. I might do that after breakfast, coffee, slowly waking, then walk in the afternoon.
But there are still good reasons for wild camping in the hills. I’ve slept here three times and this was a beautiful morning. There are feral goats in the Rhinogs which run if they see or smell you. They didn’t notice me in my tent, so I could watch them quite easily.