Portal:Geography/Did you know/3

... that Colombia produces most of the world's emeralds (Gachalá Emerald pictured)?
... that Typhoon Choi-wan was the first Category 5 equivalent super typhoon on the Saffir–Simpson hurricane scale during 2009?
... that the Benham Plateau is located in the West Philippine Basin and its basement is probably a micro-continent?
... that the 10th century reservoir Surajkund and the 8th century dam Anangpur are both located in Haryana, India?
... that the outlying islands of Scotland include the highest sea stack in the British Isles and one of the most isolated islets in the oceans of the world?