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Pamukkale: Turkey's 'cotton castle' of white limestone that inspired an ancient cultThe Pamukkale travertines are limestone slopes and thermal water pools that have attracted visitors since before the days of Ancient Greece, when the spa town of Hierapolis was founded at the top.
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The Bungle Bungles: Towering domes in the Australian outback that contain traces of the earliest life-forms on EarthThe Bungle Bungle Range in Western Australia is a collection of rock domes forged from ancient seabeds and flanked to the northeast by a prehistoric meteor impact crater.
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Scientists discover 'sunken worlds' hidden deep within Earth's mantle that shouldn't be thereA new way of measuring structures deep inside Earth has highlighted numerous previously unknown blobs within our planet's mantle. These anomalies are surprisingly similar to sunken chunks of Earth's crust but appear in seemingly impossible places.
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Scientists find hidden 'hotspot' that helped create the Great Lakes before North America even existedA hotspot that now lies in the middle of the Atlantic Ocean was once under the Great Lakes, and may explain why they formed where they did.
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Tristan da Cunha: The most remote inhabited island on Earth, forged from a supercontinent breakupTristan da Cunha is a group of islands in the South Atlantic that formed from the breakup of the supercontinent Gondwana. Today, it's home to a tiny and extremely isolated farming community.
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Kawah Ijen: The volcano in Indonesia that holds the world's largest acidic lake at its heartKawah Ijen is an active volcano on the island of Java with an extremely acidic crater lake and gas emissions that produce blue flames upon contact with oxygen in Earth's atmosphere.
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The oldest rocks on EarthThe world's oldest rocks are spread across the globe and paint a picture of Earth's turbulent early history. Here are some of the most notable and important formations scientists have discovered.
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There's a massive fault hidden under America's highest mountain — and we finally know how it formedToday, the Denali Fault rips apart some of the North American plate, but it was once a place where tectonic plates came together.
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Marble Caves: Chile's ethereal turquoise caverns with 'mineral ice cream' on the wallsThe Marble Caves sit on the shores of a turquoise glacial lake in southern Chile. Light bounces off the water onto the walls, creating a magical, ever-changing display inside the caverns.
