I had to good fortune to travel to this part of Oman during my time in the US Army. It was the spring of 1997. After spending a month at the NCO Academy at Fort Campbell, Kentucky (the best three days of training ever crammed into one month) in the late winter (the ultimate definition of bleak and damp), the balmy coastal weather and dry mountain air of our camp were much needed.
Our deployment kept us too busy to visit the sites listed here. The closest we came to something like those described in the other reviews was a 14th century mosque being excavated on the outskirts of Salahlah by a German team of archaeologists. They graciously gave us a tour of the site which was very interesting, especially in terms of the burned roof timbers. The site was near the beach, but that is about all I can recall.
Lovely landscape, warm temperatures in the spring, great people, and wonderful drives in the mountains. We had a great airborne operation on the beach and I even got to meet the Crown Prince, now King, of Jordan. Go to Oman and enjoy. I wish I could...