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| To reach 800-year-old caves in Nepal’s remote Mustang region, a scientist scales a cliff 155 feet above a valley floor. The caves may once have stored manuscripts. Photograph by: Cory Richards |
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Cabbage coral thrives on a seamount slope of an archipelago with more than 1,500 islands. |
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Cut from rocks 3 billion years old, the Callanish standing stones likely stood before the Great Pyramid was finished. Humans had already settled there 5,000 years ago. |
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African elephants quench their thirst at sunset. Botswana has the highest elephant population in Africa. |
