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Figure 14. Photograph A17-148-22718. Taken on the way to the Moon, December 1972 on Apollo 17.  View of the Arabian Peninsula and adjacent Africa and Asia. The spreading centers of the Red Sea, Gulf of Aden and East Africa come together in the Afar Triangle (light-colored triangular wedge of land at the south end of the Red Sea). This low-lying region is a complex of tectonic and volcanic features that reflect the ongoing regime of sea-floor spreading.