Cinder cones are the simplest type of volcano. They are built from particles and blobs of congealed lava ejected from a single vent. As the gas-charged lava is blown violently into the air, it breaks into small fragments that solidify and fall as cinders around the vent to form a circular or oval cone. Most cinder cones have a bowl-shaped crater at the summit and rarely rise more than a thousand feet or so above their surroundings.  Pyroclastic = Fire pieces

Back to Oregon Trip Report

For tour itineraries, to register, or for more information contact:

NJAS Eco-Travel at: (908)-204-8998
9 Hardscrabble Road
Bernardsville, NJ 07924
or email travel@njaudubon.org.

Members receive discounts on program fees. If you are not a member and would like to become one, consider Joining New Jersey Audubon Society.