Amboy Volcanic Cone
Additional Details:
| Amboy Volcanic Cone one of the youngest cones on the Southwest, estimated age, less than 1,000 years. One of 13 in a chain extending from Amboy, California to Pisgah Cone, 9 miles west of Ludlow, California. The Volcanic ash which has accumulated in windrows is of considerable value. It is crushed into granules and used in the manufacture of pumice building block. It is a fine insulator, extremely dense and impervious to water. |
