Science and Environment Geology
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Geological map - Geological map of Saint Helena
Natural History - Geology - St. Helena is a volcanic island although volcanic activity has long since ceased. The last volcanic eruptions occurred about 7 million years ago and since that time the island has been sculpted into its present form by the forces of erosion.
St Helena - Physical Geography - The Geology of the island of St Helena, South Atlantic Ocean Help build the largest human-edited directory on the web.