Question: which park is bigger in size, Garajonay National Park or Timanfaya National Park ?

Context paragraphs:
Arabuko Sokoke National Park: The Arabuko-Sokoke Forest is located on the coast of Kenya, 110 km north of Mombasa and is protected as a national Forest Reserve.  The Arabuko-Sokoke National Park is only a small portion of the Arabuko-Sokoke Forest Reserve, a few square kilometres in size and is located on the north-western edge of the forest.  The National Park was gazetted only in the late 1980s and in fact straddles the Forest Reserve boundary with about 50% lying outside the boundary.  This outer section actually lies outside an electric elephant fence installed in 2006/7 and is now fully inhabited by local communities to the extent that there is no sign on the ground to show where the National Park begins or ends.  The National Park doesn't add any particular protection to the forest which is the largest fragment of coastal forest (420 square km) left in East Africa, and is an area of high endemism, containing endemic mammals, birds and plants.  The Reserve, however, is jointly managed by the Kenya Forest Service, Kenya Wildlife Service, National Museums of Kenya and the Kenya Forest Research Institute and is one of the better protected forests in Kenya.  The forest was first protected as a Crown Forest in 1943, and was gazetted in the 1960s.  The forest is threatened by the desire for land by local people.  Several national and international conservation organisations are working with the Kenya Wildlife Service to protect the park.

Timanfaya National Park: Timanfaya National Park (Spanish: "Parque Nacional de Timanfaya" ) is a Spanish national park in the southwestern part of the island of Lanzarote, Canary Islands.  It covers parts of the municipalities Tinajo and Yaiza.  The area is 51.07 km2 .  The parkland is entirely made up of volcanic soil.

Daisetsuzan National Park: Daisetsuzan National Park (大雪山国立公園 , Daisetsuzan Kokuritsu Kōen ) , or Taisetsuzan is located in the mountainous center of the northern Japanese island of Hokkaidō.  At 2267.64 km2 , Daisetsuzan is the largest national park in Japan, and is approximately the size of Kanagawa Prefecture.  Daisetsuzan, meaning "great snowy mountains", an apt description of these peaks.  There are 16 peaks over 2000 m in Daisetsuzan National Park, both with and without trails.  The park offers some of the most rugged scenery in Japan.  Asahidake (2290 m ), located in the north of the park, is the highest peak in Hokkaidō.  Daisetsuzan National Park spans two subprefectures of Hokkaidō, Kamikawa and Tokachi.  Daisetsuzan National Park was established in 1934.

Katmai National Park and Preserve: Katmai National Park and Preserve is a United States National Park and Preserve in southern Alaska, notable for the Valley of Ten Thousand Smokes and for its Alaskan brown bears.  The park and preserve covers 4,093,077 acres , being roughly the size of Wales.  Most of this is a designated wilderness area in the national park where all hunting is banned, including over 3922000 acres of land.  The park is named after Mount Katmai, its centerpiece stratovolcano.  The park is located on the Alaska Peninsula, across from Kodiak Island, with headquarters in nearby King Salmon, about 290 mi southwest of Anchorage.  The area was first designated a national monument in 1918 to protect the area around the major 1912 volcanic eruption of Novarupta, which formed the Valley of Ten Thousand Smokes, a 40 sqmi , 100 to pyroclastic flow.  The park includes as many as 18 individual volcanoes, seven of which have been active since 1900.

Gangotri National Park: Gangotri National Park is a national park located in Uttarkashi District Uttarakhand, India.  The size of this national park is about 2,390 square km.  It was third largest National park of India.  The park provides majestic beauty of coniferous forests and grandeur of glacial world combined with lush green meadows.

Yaiza (municipality): Yaiza is a municipality on the island of Lanzarote in the Canary Islands, Spain.  It lies in the southwest of the island and forms part of the province of Las Palmas.  The municipality is bounded by the Atlantic Ocean to the west, south and east.  In the west is the lagoon of Charco Verde.  To the north the Timanfaya National Park is partly within the municipality.  The eastern part of the municipality is mountainous, and south west of the mountains the Rubicon plain stretches to the coast.

Garajonay National Park: Garajonay National Park (Spanish: "Parque nacional de Garajonay" , ] ) is located in the center and north of the island of La Gomera, one of the Canary Islands (Spain).  It was declared a national park in 1981 and a World Heritage Site by UNESCO in 1986.  It occupies 40 km (15 sq mi) and it extends into each of the six municipalities on the island.

Hermigua: Hermigua is a town and a municipality in the northeastern part of La Gomera in the province of Santa Cruz de Tenerife of the Canary Islands, Spain.  It is located 12 km northwest of the island's capital, San Sebastián de la Gomera.  The Garajonay National Park covers the southern part of the municipality.

El Rubicon: El Rubicón is a flat gravel plain located at the southernmost end of the island of Lanzarote in the Yaiza municipality.  The plain is to the south of the 'Los Ajaches' range of hills and the lava fields of Timanfaya national park.

Lanzarote: Lanzarote ( ; ] ) is a Spanish island, the easternmost of the autonomous Canary Islands in the Atlantic Ocean.  It is located approximately 125 km off the coast of Africa and 1,000 km from the Iberian Peninsula.  Covering 845.94 km2 , Lanzarote is the fourth-largest of the islands in the archipelago.  With 141,938 inhabitants, it is the third-most populous Canary Island, after Tenerife and Gran Canaria.  In the centre-west of the island is Timanfaya National Park, one of its main attractions.  The capital is Arrecife.

Supporting paragraphs: Garajonay National Park Timanfaya National Park
Answer: Timanfaya National Park