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In this unusual image Agathla Peak stands illuminated in the distance, partly blocked by the shadowy Porras Dykes, while Church Rock stands illuminated in the foreground. Agathla Peak, also known as El Capitan, is about 6.5 miles from the camera position. It is a sheer volcanic plug that rises 1500 feet above its base. Porras Dykes, about 1.5 miles away from the camera position, sits atop Comb Ridge. These volcanic dykes are 300 feet high and are named after Francisco de Porras, who was a missionary to the Hopis between 1629 and 1633. Church Rock is formed by another series of volcanic dykes which are also 300 feet high.