Wadi Shee

On your way back from Khor Fakkan, rather than taking the motorway, choose the old route (Wadi Shee) through the Omani enclave of Madha and then Nahwa, giving you the opportunity to cross the border between Oman and the Emirates 3 times.

On leaving Khor Fakkan, take the E99 south towards Madha Waterfall and continue towards Nahwa. You'll pass through a beautiful oasis where you'll find plenty of places to take great photos.

On leaving Nahwa, take the track on your left to reach Wadi Shee. After a few kilometres, at the GPS, turn right to continue into Wadi Shee.

The trail is very easy, and the area is beautiful; it's a good alternative for getting to the motorway. 

Difficulty
1/5 Easy drive most of the journey on asphalted road, only in the wadi Shee you will find a nice trail

GPS 1 Exit E99 toward Madha Waterfall (at this point you enter in Oman)
25.304692, 56.35052

GPS 2 Madha road toward Nahwa
25.281685, 56.33581

GPS 3 Trail entry Nahwa (at this point you enter in UAE)
25.27151, 56.283327

GPS 4 Entry in Oman
25.27883, 56.26771

GPS 5 Trail toward Wadi Shee
25.279076, 56.25968

GPS 6 Entry in UAE
25.28451, 56.25685

GPS 7 End of the trail Wadi Shee (you will join the motorway toward Dubaï)
25.29262, 56.24032