There is a beautiful small coastal town called Tiwi on the way from Muscat to Qalhat on the coastal road. Near to Tiwi are two very beautiful wadis (rivers) known as Wadi Shab and Wadi Tiwi which are a must to visit and have a relaxing time there. More information are at my VT Tiwi page.
There is a huge liquified natural gas plant along the coastal road to Qalhat. Three hundred over kilometres of pipeline carry dry gas from central Oman to this plant for liquefication progess. Apparently, the first successful shipment was sent to South Korea and further developlement is underway for this new technology.
The Bimmah Sinkhole is a very beautiful sinkhole about 200 metres inland from the Gulf of Oman. In this sinkhole, fresh water is mixed with sea water giving it a wonderful colour as seen from the photograph. People can go swimming in this sinkhole of camp by its side. On the top surface, it is not easy to locate this sinkhole and therefore a guide will help.
In order to travel to Qalhat and the coastal areas between Muscat and Sur, you need to have a 4 wheel drive as the road is rather rugged. They are now constructing a proper road which should be ready in about 2 years time, but in the meantime only a 4 wheel drive is possible to reach here.
Favorite thing: I particularly enjoyed posing for a photograph with the Qalhat signboard. The interesting thing is that everything is so ancient and natural here, except for this signboard which sticks out like a thorn.