Like all the other islands of the Canary Islands, La Palma was created by volcanoes on the bottom of the sea, and is the most active volcanic island. In 1815, the German geologist Leopold von Buch visited the Canary Islands. He had been visiting Tenerife, where he visited the Las Cañadas caldera, and then later to La Palma, where he visited the Taburiente caldera, that the Spanish word for cauldron or large cooking pot – "caldera" – became a word that geologists use. In the center of the island is the Caldera de Taburiente National Park; one of four national parks in the Canary Islands.