Options are obvious, the ocean, montains, cliffs, hike. Multi spots and again 'on your own'
Another amazing view
Beautiful place where the ocean make a natural fountains in front of mystery cave - salalah
This beach was one of those places I could have happily sat for hours.  There was a lagoon with Flamingoes and Spoonbills, as well as other more common species of waterbirds and the beach had been sculpted by crabs.  A bit further on toward Yemen is a blowhole, and then the mountains full of frankincense trees.  A truly magic spot, with not another soul in sight.
Beautiful, isolated spot.