If you are traveling from Dubai towards Fujairah, I recommend stopping by this place for an hour, a very interesting place, unusual mountains bordering the desert. There is a small museum that offers guided tours of the archaeological site, but tours must be booked in advance.
There used to be a place with beautiful sands where anyone could come. Now they have made a national park, where they are allowed only with an excursion, which costs a decent amount of money.