Between 10,000 and 40,000 ethnic Yazidis are trapped in the Sinjar Mountains after fleeing attacks by Islamic State of Iraq and Syria (ISIS). The 4,400 foot high Sinjar Mountain range is venerated by the Yazidis. They consider it to be the place where Noah's Ark settled after the biblical flood. Sinjar Mountain range is a barren ridge, four miles wide and 25 miles long. It is entirely devoid of plant life, water or shade.