Pinnacles National Park

Listen for a moment. Wind moves through dry chaparral, a low, scratchy sound like paper. Somewhere above, a bird calls once and goes quiet. The air smells of warm sage and dust. Then you look up, and the rock rises in front of you. Red, rust and cream spires stand against the sky like the broken teeth of something enormous. Nothing here looks quite like the rolling hills you drove through to arrive.

That feeling of strangeness is right. These rocks do not belong here. They are the remains of an ancient volcano that formed far to the southeast, roughly twenty-three million years ago. Geologists call it the Neenach Volcano. Its origin lay near the area that is now Lancaster, in Southern California. So the formations around you are travellers. They have been moving for millions of years, and they are still moving today.

The engine of that journey is the San Andreas Fault. The fault runs just east of the park. Over millions of years, it split the old volcano in two. One part stayed in the south. The other part, the part you are standing near, rode the Pacific Plate northwest — nearly two hundred miles. Matching rocks in both places helped scientists confirm how the fault moves. In a quiet way, this park became evidence for the theory of plate tectonics.

Look closely at the cliff faces. Much of the rock is a volcanic breccia — a stone made of broken fragments cemented together. You can see pale chunks and darker pieces locked into one mass. Wind, rain and frost have worn the softer parts away. What remains are the spires, the knobs and the deep, narrow canyons. The shapes change with every step along the trail, and with every hour of light.

Long before anyone drew a park boundary, people lived among these rocks. The Chalone and Mutsun peoples, groups within the larger Ohlone world, knew this land. They knew its seasons, its plants, and its water. Their descendants remain part of the region today. When you walk the trails, you are walking through a landscape with a long human story, much older than the maps in the visitor centre.

In the late nineteenth century, homesteaders arrived in the valleys nearby. One of them, Schuyler Hain, became a tireless voice for these rocks. He led tours and pushed for their protection. Locals later called him the Father of the Pinnacles. His efforts paid off. In 1908, President Theodore Roosevelt declared the area a national monument. More than a century later, in 2013, it became a full national park.

Here is something many visitors miss. Pinnacles has two entrances, one on the east side and one on the west. No road connects them through the park. If you arrive at one side and want to reach the other by car, you face a long drive around the hills. On foot, though, trails link the two sides across the high ridges. So plan your day around the side you choose.

Now, to the caves. These are not caves carved by water into solid rock. They are talus caves. Over time, huge boulders fell into narrow canyons and wedged themselves between the walls. The result is a roof of stone above a dark passage below. You walk under rocks the size of houses, held in place only by their own weight. It is a strange, thrilling sensation.

The two main cave systems are Bear Gulch Cave and Balconies Cave. Inside, the light drops fast. You hear water drip, and your own breathing becomes loud. A flashlight is essential, because some sections are completely dark. You may duck, squeeze and climb short steps. Bear Gulch Cave also shelters a colony of bats, including Townsend's big-eared bats. For their sake, parts of the cave close during certain seasons.

If you climb the High Peaks Trail, watch for a section known as the Steep and Narrow. Here, the path becomes a series of small steps cut directly into the rock. Metal handrails help you along the cliff edge. Workers with the Civilian Conservation Corps, a Depression-era public works programme, built much of this trail in the 1930s. Their careful stonework still carries hikers along a route that once seemed impossible.

Now keep your eyes on the sky. The large, dark birds circling overhead are often turkey vultures. But some of them may be something far rarer — California condors. In the 1980s, these birds came very close to extinction. Pinnacles became a release site for captive-raised condors in 2003. Today, condors with numbered wing tags fly over these ridges. Their wings stretch close to three metres from tip to tip.

The park also matters to climbers and to smaller creatures. Climbers come for the volcanic spires, though the crumbly rock demands respect. Some routes close seasonally so that prairie falcons and other raptors can nest in peace. In spring, the hillsides turn green, and wildflowers spread across the slopes. In summer, the heat can be intense. Shade is rare on the high trails, so the landscape changes its mood completely with the seasons.

Before you move on, pause here. Look again at the spires, and remember that they are still travelling, a few centimetres each year. Listen to the wind in the brush, and to the silence behind it. Maybe a condor turns slowly above the ridge. When you walk away, the rocks will stay, moving very slowly north. You have stood for a few minutes on one small part of a very long journey.