Geography of Oman around the Al Hajar mountains are part of the Gulf of Oman desert and semi-desert ecoregion, while the mountains themselves are a distinct habitat. The northernmost area, Musandam, extends from the tip of the Musandam Peninsula to the boundary with the United Arab Emirates (UAE) at Hisn al Diba. It borders the Strait of Hormuz, which links the Persian Gulf with the Gulf of Oman, and is separated from the rest of the sultanate by a strip of territory belonging to the UAE. This area consists of low mountains forming the northernmost extremity of the Al Hajar al Gharbi (Western
Persian Gulf naming dispute "Persian Gulf" as the "Conventional" name, along with 14 "Variant" names in different languages, such as "Gulf of Iran", "Gulf of Ajam", "Gulf of Basra", "Arabian Gulf", "Persian-Arabian Gulf", "Gulf of Fars", and "Farsi Gulf". In "Persian Gulf States Country Studies" published in 1993 by the Federal Research Division of the U.S. Library of Congress, the authors follow the practise of the BGN by using "Persian Gulf" while acknowledging that the governments of Kuwait, Qatar, United Arab Emirates, Oman and Bahrain "officially reject the use of the term Persian Gulf—as do other Arab governments—and refer to that body of water