Simco volcanic field is a N-S aligned cluster of 24 monogenetic cinder cones. It is located E and SE of Mt Adams, Washington, California, near the town of Goldendale.
Associated is the younger basaltic Lincoln Plateau with Signal Peak at the western end of the field and east of Adams. It was formed by a shield volcano active until about half a million years ago.
One of the world's most famous volcanoes looming over the City of Naples
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