This is an image of some of the islands that make up the nation of Cape Verde. While most in that group of ten islands are flat, some are very tall: Fogo, Santa Antão, and São Nicolau. Those three stand well above their compatriots, with Fogo reaching an altitude of 2,829 meters (9,281 feet).
Click here for original story, Bizarre cloud patterns: Kármán’s vortices caused by air wrapping around tall islands
Source: Phys.org