We picked up our friends, the Wynn's, from their home this morning and set off for Pinnacles National Park, approaching from the east entrance.
Located east of the Salinas Valley in Central California, Pinnacles, originally a National Monument, became a National Park in 2013.
The notable feature about Pinnacles is that this terrain is the remains of part of an ancient volcanic field that was torn asunder by the San Andreas Fault.
Twenty three million years ago, multiple volcanoes erupted resulting in the 30-mile-wide volcanic field shaped by explosions, lava flows, and landslides. Then the west side was pushed 195 miles north as a result of the San Andreas Fault, traveling at a rate of 3-6 cm per year. Over the millennia, erosion and weathering eventually carved the the rocks and the pinnacles we see today.
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| view of the Pinnacles from Peaks View |
The reader board at Peaks View gave a good overview of the geology. We were in fact standing on a section of the fault that had slid, just like in the diagram.
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| heading along the trail with Leda and Ray |
We hiked the Bear Gulch Cave Trail that took us through a talus cave, created by the monoliths that cracked and tumbled down, becoming wedged and stuck in a canyon, blocking off the path. It was quite an experience to squeeze our way through the cracks left between the fallen rocks. All I could think of is that if the San Andreas Fault awoke while we squeezed our way through the tumbled rocks to get to the other side, we would be just a little squashed. We needed to use a flashlight in a couple of sections. The parks department did a great job of creating a trail, carving steps out of the rocks in parts.
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| exposed rocks |
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| entering the talus cave to get through the canyon to the other side |
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| looks like it will be a tight squeeze in places |
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| some spots were easier to squeeze through than others |
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| glad that the San Andreas Fault remained quiet this morning |
Back at the RV Park, the sunset was spectacular, a fitting ending to our stay here. Tomorrow we head off down the road, traveling a short distance to Greenfield where we plan to stay for a couple of days. From there we will head back to Pinnacles National Park to see the rock formations from the west side. There is no direct route from one side of the park to the other because of the ridges created by the fault zone.