Some 23 million years ago multiple volcanoes erupted, flowed, and slid to form what would become Pinnacles National Park. What remains is a unique landscape. Travelers journey through chaparral, oak woodlands, and canyon bottoms. Hikers enter rare talus caves and emerge to towering rock spires teeming with life: prairie and peregrine falcons, golden eagles. Everyone will know you are a fan when you wear this Pinnacles National Park T-Shirt!