Question: Which national park is situated in the Pyrenees of Huesca province, Aragon, Spain, Ordesa y Monte Perdido National Park or Caldera de Taburiente National Park? 
Context: Idafe Rock is a natural stone pillar located in Caldera de Taburiente National Park on the island of La Palma in the Canary Islands. Monte Perdido (in Spanish; Mont Perdu in French; Mont Perdito in Aragonese; Mont Perdut in Catalan, all four meaning "lost mountain") is the third highest mountain in the Pyrenees.  The summit of Monte Perdido (3355 m), located in Spain, lies hidden from France by the seemingly impenetrable peaks of the Cirques of Gavarnie and Estaubé.  It stands in the north of Huesca province.  The mountain forms part of the Monte Perdido Range and is located in the Ordesa y Monte Perdido National Park, in the western part of the Pyrenees, in the community of Aragon, Spain. 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.  It contains the enormous expanse of the Caldera de Taburiente which dominates the northern part of the island, and was designated as a national park in 1954.  The telescopes of the Roque de los Muchachos Observatory are situated very close to the summit. The Pyrénées – Mont Perdu World Heritage Site (also known as UNESCO Patrimonio Mundial Pirineos – Monte Perdido in Spanish) is a world heritage site straddling the border between Spain and France in the Pyrenees mountain chain.  The summit of Monte Perdido (French: Mont Perdu) is on the Spanish side of the border.  The site was designated in 1997 and extended north in 1999 to include the Commune of Gèdre in France. The Ordesa Valley is a glacial valley in Aragon, in the Spanish Pyrenees which forms part of the Ordesa y Monte Perdido National Park.  It was first discovered in 1820, but not mapped in detail until approximately the 1920s.  The valley is about 11 km long. Cerler, officially called "Aramón Cerler", is a ski resort situated above the village of Cerler in the high Benasque Valley, near the town of Benasque in the central Pyrenees (province of Huesca, Spain).  Near Cerler are the highest peaks of the Pyrenees, "Aneto", "Monte Perdido", and "Posets". Ordesa y Monte Perdido National Park (Parque nacional de Ordesa y Monte Perdido) is an IUCN Category II National Park situated in the Pyrenees of Huesca province, Aragon, Spain.  There has been a National Park in the Ordesa Valley since 1918.  Its protected area was enlarged in 1982 to cover the whole region amounting to 156.08 km². The Grotte Casteret, also known by its Spanish name Gruta Helada de Casteret, is a limestone ice cave, located high in the Spanish Pyrenees, within the Ordesa y Monte Perdido National Park.  Discovered in 1926 by Norbert Casteret, it is known for its Grande Salle (Great Hall) which has a frozen lake some 2000 m2 in area, its ice formations, and a 20 m ice wall into a second chamber. The Cinca (] ; ] , ] ; Aragonese: "A Cinca" , ] ) is a river in Aragon, Spain.  Its source is in the Circo de Pineta, in the Ordesa y Monte Perdido National Park, in the Aragonese Pyrenees.  It is a tributary to the Segre River, with its confluence at La Granja d'Escarp, not far from the point where the Segre flows into the Ebro River.  The Cinca River flows through a rich agricultural region. Soum de Ramond, also known as Pico de Añisclo in Spanish and Aragonese, is a mountain of 3,263 metres in the Monte Perdido massif in the Aragonese Pyrenees in northern Spain.  It is one of the three mountains comprising "Las Tres Sorores", the others being Monte Perdido (3,355 m) and Cilindro de Marboré (3,328 m).
Answer: Ordesa y Monte Perdido National Park