The archaeological site of Shisr is located next to the village of Ash Shiṣr in Dhofar, Oman.

The settlement was an inland trading post and has been a UNESCO World Heritage Site Land of Frankincense since 2000.

Some considered it to be the legendary lost city of Ubar or Iram.

[2][3][4] There is a probability that it might have been in the land of Ubar which was a historical region rather than a city.

The site might have inspired the legend of the lost city of Ubar when the spring dried up and the settlement was abandoned.