Khermen Tsav, Ömnögovi Province. "Khermen" means wall and "Tsav" means fissure, but some call it the "Citadel of the Desert", others "The End of the World". Millions of years of erosion formed this majestic and isolated canyon in the middle of the desert. The canyon stretches on 250 square kilometers and is 200 meters deep. Scientists agree that 200 millions years ago, the place was covered with an inner sea. Today, the desolate and remote site of Khermen Tsav stands out as one of the most extraordinary geological wonders of Mongolia, at last for our eyes.