6. Point Nemo is a place in the South Pacific ocean that is the furthest point from any terrestrial life. It is at a distance of 1,670 miles from the nearest landmass.
Point Nemo in the South Pacific Ocean is 2,688 km away from the nearest landmass. Also, it is known as the oceanic pole of inaccessibility which means that it is a point in the ocean which is farthest from any land. The nearest lands from this point are Ducie Island (Pitcairn Islands), Motu Nui (Easter Island), and Maher Island (near Siple Island).
The name Point Nemo is inspired by the fictional hero of the Jules Verne novel, Twenty Thousand Leagues Under the Sea. In Latin, Point Nemo means no one. Point Nemo is almost inaccessible from land and so it is used for depositing decommissioned satellites, space crafts, and space stations. That’s why it is also known as “spacecraft cemetery”.(1,2)
7. The Appalachian Mountains are shrinking continuously while the Himalayan Mountains are growing.
The Appalachian Mountain, located in eastern North America, runs from Alabama to New York. It was formed around 480 million years ago. It was once as tall as the Rocky mountains which are located in western North America and their highest peak, Mt. Elbert, is 14,400 feet high. Due to constant rainwater erosion, the Appalachian Mountain is shrinking continuously and its highest peak Mount Mitchell is 6,684 feet high.
The Himalayan Mountains located in Asia between the Indian subcontinent and Tibetan Plateau once used to be as high as the Rocky Mountain. But, now it is even taller and its highest peak, Mount Everest is 29,029 feet high. The Himalayan Mountain range is growing regularly due to the constant collision of India into southern Asia. The Himalayan Mountains are also being eroded by rainwater. However, the rate of erosion is quite small as compared to its rate of growth by the collision. Himalayan Mountain range is currently growing at the rate of 5 mm per year.(1,2,3)
8. The Dingo fence in Australia has a length of 3,500 miles which is longer than the distance between Seattle and Miami.
Dingo fence is a 3,500 miles-long fence in Australia that was built in between 1880 to 1885. This fence was built to keep dingoes (Australian wild dogs) out of the southeastern part of Australia where sheep flocks were reared. It is one of the largest man-made structures in the world and is the largest fence in the world. A large part of this fence lies in Queensland where it is known as the Great Barrier Fence or the Wild Dog Barrier Fence.
Currently, it is under the administration of Department of Natural Resources and Water. Twenty-three staff members are employed to look after this fence. A team of two persons patrols 300 km section of this fence once in a week. Some parts of the Dingo Fence are lit at night using fluorescent lamps.(source)
9. The largest ocean in the world, Pacific Ocean, is antipode of itself at some points. There are some points in this massive ocean where if someone takes a dip in the ocean, travels through the core, and comes out on the opposite side, then they would still be in the Pacific Ocean.
With an area of 165.25 million square kilometers, Pacific Ocean is the largest ocean in the World. This massive ocean lies between the US in the east and Asia and Australia in the west. It extends from the Southern Ocean in the south to the Arctic Ocean in the north. Also, the massive Pacific ocean is antipodal at some points making it its own hemisphere. Antipodal, by definition, means points or places in the earth which are diametrically opposite to each other. Therefore, if a person takes a dip in Pacific ocean at that certain point, goes straight through the core and comes out on the other side of the Earth, the person will still be in the Pacific ocean.(source)
10. The Er Wang Dong cave in China and Hang Son Doong cave in Vietnam are so massive that there exists an independent weather system inside it.
Er Wang Dong cave in China is so large that it has its own weather system and vegetation. Its known depth is 441 m. The locals make weather forecast based on the observation from the cave’s entrance, Niubizi tiankeng.
Hang Son Doong cave in Vietnam is located in Laos-Vietnam border. It has the largest known cave passage cross-section in the world. Furthermore, it is so large that it has its own vegetation, fast flowing river, and weather system inside.(1, 2)