A series of lava flows spill into the ocean, Big Island, Hawaii

The power of Kīlauea. Lava flows spill into the ocean on Big Island, Hawaii

Most landscapes change over thousands of years. Volcanoes can reshape them in a matter of hours, and on Hawaii's Big Island, they continue to do just that. Recognizing the scientific and natural importance of this ever-changing environment, Hawaii Volcanoes National Park was established on August 1, 1916. For more than a century, it has protected over 350,000 acres of volcanic terrain, native forests, and rare wildlife.

The national park is named after its two volcanoes—Kīlauea and Mauna Loa. Kīlauea is one of the world's most active volcanoes, and during some eruptions, its lava flows downhill to the Pacific Ocean, where it cools into new rock. Mauna Loa, the world's largest active volcano by volume, has erupted 34 times since its first well-documented eruption in 1843. The park is also home to species such as the nēnē, Hawaii's state bird, and the endangered Hawaiian petrel. As it marks another anniversary today, the park continues to protect a landscape that never stands still.