Genovesa Island (Spanish: Isla Genovesa), referred to in English as Tower Island, is a shield volcano in the Galápagos Islands in the eastern Pacific Ocean.[1] The island occupies about 14 square kilometres (5 sq mi), and its maximum elevation is 64 m (210 ft).[citation needed] The horse-shoe shaped island has a volcanic caldera whose wall has collapsed, forming the Great Darwin Bay, surrounded by cliffs.[2] Lake Arcturus, filled with salt water, lies in the centre, and sediment within this crater lake is less than 6,000 years old. Although no historical eruptions are known from Genovesa, there are very young lava flows on the flanks of the volcano.
Genovesa Island | |
Geography | |
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Location | Galápagos Islands, Ecuador |
Coordinates | 0°19′00″N 89°57′00″W |
Archipelago | Galápagos Islands |
Highest elevation | 64 m (210 ft) |
Administration | |
Ecuador | |
Province | Galápagos Province |
Canton | San Cristóbal |
Parish | Santa María |
The official Spanish name "Genovesa" is from the Italian city of Genoa, in honor of Christopher Columbus. The English name "Tower" is presumably a corruption of "Downes". The island's position was reported by John Downes of the USS Essex in 1813, during the War of 1812, and the name "Dowers's" appeared in 1815, presumably a misspelled reference to Downes. After passing through "Dowers's", "Dowers", and "Tower's", by 1841 it was written as "Tower" in the British Admiralty chart.[3]
This island is known as Bird Island, because of the large and varied bird colonies which nest here. There are an abundance of frigatebirds and it is among the best place in the archipelago to see red-footed boobies, Nazca boobies, swallow-tailed gulls, storm petrels, tropicbirds, Darwin's finches, and Galápagos mockingbirds.
Prince Philip's Steps is an extraordinary steep path that leads through a seabird colony full of life, up to cliffs that are 25 metres (82 feet) high. At the top, the trail continues inland, passing more seabird colonies in a thin palo santo forest. The trail also provides overviews of a rocky plain. Storm petrels here are different from any others in the world because they are active during the day. To avoid predators, they only return to their nest holes at night.
The smallest marine iguana in the archipelago lives here.
In Darwin Bay there is the possibility to either dive along the inner wall or go to the outer wall, which is less protected. Another possibility is to dive from the outside of the volcano through the channel into the caldera.
The 1815 Fyffe chart listed below displays the first appearance of the name Dowers's for the island now known as Genovesa/Tower. This chart also identifies the present Isla Santa Cruz as Porters Isle, so it is clear that Fyffe knew of David Porter's earlier visit on the United States Frigate Essex. He therefore may have also known that Lieutenant John Downes of the Essex reported the position of this island to Captain Porter, and if so he may have assigned the Lieutenant's name (but mis-spelled as “Dowers”) to the island.The Hooker chart in the second edition of David Porter's Journal of a Cruise shows the same island but with no name assigned to it. A note on the chart states that the island is “ … situated agreeably to the reports of several Whalemen, and corresponds to the position in which it was seen by Lieut. Downes.”
Galápagos Islands | |
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Volcanoes |