India-Pakistan Border at Night

An astronaut aboard the International Space Station took this nighttime panorama while looking north across Pakistan’s Indus River valley. The port city of Karachi is the bright cluster of lights facing the Arabian Sea, which..

Inside Hang Son Doong, The Largest Cave on Earth

 Hang Son Doong is the largest known cave in the world. Inside is a sheer rocky cliffs, jungle-like vegetation and underground river. Hang Son Doong  is nearly five times larger than Phong Nha Cave, a nearby cave..

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