Question: Which park, Picos de Europa National Park or Caldera de Taburiente National Park is on an island?
Sentence (from "Caldera de Taburiente National Park"): Caldera de Taburiente National Park (Spanish: "Parque Nacional de la Caldera de Taburiente" ) is large geological feature on the island of La Palma, Canary Islands, Spain.
Relevant evidence: Yes