This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Concretion Point Loma Fm. Concretion within the Point Loma Formation Sunset Cliffs Point Loma California Taken Own br from org en Jstuby at org en en Jstuby Original upload log page en ConcretionPointLomaFm Jstuby bytes no within the Point Loma Formation Sunset Cliffs Point Loma California Taken Concretion Geology