Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Galápagos Islands' has mentioned 'Volcano' in the following places:
Occurrence Sentence Text Source
Additional characteristics of the Galxc3xa1pagos Archipelago are closer volcano spacing, smaller volcano sizes, and larger calderas.
The caldera on Fernandina experienced the largest basaltic volcano collapse in history, with the 1968 phreatomagmatic eruption.
Fernandina has also been the most active volcano since 1790, with recent eruptions in 1991, 1995, 2005, and 2009, and the entire surface has been covered in numerous flows since 4.3 Ka.
On 13 May 2005, a new, very eruptive process began on this island, when an ash and water vapor cloud rose to a height of 7xc2xa0km (23,000xc2xa0ft) and lava flows descended the slopes of the volcano on the way to the sea.
This problem abounds in Cerro Azul volcano and Isabela, and in Santiago, pigs may be the cause of the disappearance of the land iguanas that were so abundant when Darwin visited.