NATURE'S PLAYBOOK

Wallace Creek Trail — Walking Along the San Andreas Fault Wallace Creek Trail in Carrizo Plain National Monument is one of the most fascinating short hikes in California because it lets you literally walk along the San Andreas Fault and see how the Earth’s crust has slowly shifted over time. The San Andreas Fault is the boundary where two massive tectonic plates meet—the Pacific Plate and the North American Plate. Instead of one plate sliding under the other, these plates slide sideways past each other. This movement happens very slowly—only about the speed that your fingernails grow—but over thousands of years it has dramatically shaped the landscape. Wallace Creek is one of the clearest places in the world to see this movement. Long ago, the creek flowed straight across the plain. But as the plates gradually shifted, the land on one side of the fault moved north while the other side stayed in place. Over time this slowly pulled the creek sideways, creating the visible bend you see today. The creek has been offset about 425 feet, providing scientists with important evidence for measuring how the fault moves over time. The Wallace Creek Trail is about 1.5 miles round trip and is relatively easy, making it a great hike for families or anyone curious about geology. Along the trail, you’ll walk through the open grasslands of Carrizo Plain with beautiful views of the Temblor Range to the east and the Caliente Range to the west. The landscape feels vast and quiet, with wide open skies and rolling hills stretching in every direction. If you visit in March during a good bloom year, you’ll likely see wildflowers scattered across the plain and along the trail, including: • California poppies • Desert fiddleneck • Goldfields • Phacelia • Baby blue eyes • Tidy tips • Lupine • Filaree These colorful patches of flowers add another layer of beauty to a hike that is already full of natural wonder. One of the most amazing parts of walking this trail is realizing that the ground beneath your feet is part of a massive moving system shaping the entire state of California. The fault may move slowly most of the time, but every once in a while that movement is released suddenly as an earthquake. Standing here, looking at a creek that has been slowly shifted hundreds of feet by the movement of the Earth itself, is a powerful reminder that the landscapes around us are alive and constantly changing—even if the changes are almost too slow for us to notice in a single lifetime. If you enjoy places where nature, science, and history intersect, Wallace Creek Trail is a truly remarkable stop within Carrizo Plain National Monument. Helpful Tips Start your navigation to this place before you lose Wi-Fi connection Cell Service I had Verizon so I’m not sure how things look as far as self service for Android. You’ll find patches where you might get a bar or two, and other areas with none—but you’ll cross between those spots fairly quickly. We were able to navigate from one place to the next as we visited a total of five different areas besides occasional stopping on the side of the road. However, I did have everything you needed navigation wise downloaded before we ventured out that morning. What to Wear Layers are key. When we arrived at sunrise it was in the mid-to-high 40s, but by afternoon it warmed up to around 80°F. I recommend bringing: • Comfortable sneakers or hiking shoes with traction (and ones you don’t mind getting dirty) • Hat and sunglasses • Environmentally friendly sunscreen Water & Food Bring more water than you think you’ll need, especially if you plan to explore for the day. We packed plenty of snacks and even brought a picnic lunch, which ended up being perfect later in the afternoon. Road Conditions If possible, come in a four-wheel-drive vehicle. Some people couldn’t get through certain areas because their vehicles struggled in muddy spots from rains that had fallen more than a week before we arrived. Also make sure you have: • A full tank of gas • A plan for charging if you’re driving an electric vehicle, since charging stations are limited in this remote region. Facilities There are no bathrooms at this specific location, but there are restrooms at the visitor center and other areas throughout the monument. Protect This Landscape Please do not pick the flowers and stay on roads or established paths where possible. Following Leave No Trace principles helps ensure these landscapes remain beautiful for everyone who comes after us. #wildflowers #supeblooms #publiclands