Clipperton Rock is located in the southeast of Clipperton Island. It constitutes the only emerged point of a chain of submarine mountains and volcanoes known as the
East Pacific Rise. It is composed of
trachyandesite and constitutes the last fragment of the neck of the volcano before becoming dormant. Elongated in shape and approximately a hundred meters in length the rock has many cavities large enough to walk through. almost entirely surrounded by the waters of the lagoon it is only connected to the rest of the atoll by a narrow strip of land to the east. == References ==