Jagged pinnacles and spires, monoliths, and unusual caves—welcome to Pinnacles National Park in central California. President Theodore Roosevelt designated the area as a national monument in 1908, and Pinnacles would earn its status as a national park in 2013. As we celebrate the park"s anniversary today, let"s take a moment to appreciate this landscape. Pinnacles owes its formations to an ancient volcanic eruption that occurred 23 million years ago. The fiery beginnings made towering spires, cliffs, and talus caves, which are created by falling boulders wedged into narrow canyons. Over millennia, tectonic forces shifted the landmass northward, leaving the park far from its volcanic birthplace. Talk about a journey!