| Here, geologically sculpted sedimentary rocks of the Middle Miocene Ricardo Group (roughly 10 million years old) are exposed in dramatic fashion below a volcanic basalt flow (the blackish rubble at top of image). |
| Here, geologically sculpted sedimentary rocks of the Middle Miocene Ricardo Group (roughly 10 million years old) are exposed in dramatic fashion below a volcanic basalt flow (the blackish rubble at top of image). |