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The Air mountain range in north-central Niger, Africa on Earth
Gemini 6 photograph of the Air mountain range in north-central Niger, Africa, on the Earth. This mountain range is in the Sahara desert. The dark circular areas are plateaus of resistant masses of granite, intruded as ring complexes. The curved feature cutting the plateau on the right is a gabbroic ring dike. A volcanic crater can be seen at the lower left. The image is approximately 130 km (80 miles) across. (Source: GSFC)
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