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Sierra Negra (also, and perhaps more properly, Cerro La Negra) is an extinct volcano located in the Mexican state of Puebla, close to the border with Veracruz. At officially 4,580 metres (15,030 ft) above sea level, it is the fifth-highest peak in Mexico.
The Sierra Negra like the other volcanoes on Isabela is believed to have been created from a mantle plume which has created the hotspot.The age of Sierra Negra and the other volcanoes on Isabela is hard to determine as they are in a north–south line to the east of the hotspot, which is believed to be under Fernandina volcano, and the Nazca Plate is moving east.
Location of the LMT in Mexico. The telescope is located at an altitude of 4,850 metres (15,910 ft) on top of Sierra Negra, the fifth-highest peak in Mexico and an extinct volcanic companion to Mexico's highest mountain Pico de Orizaba, inside the National Park Pico de Orizaba in the state of Puebla.
The calderas on Sierra Negra and Alcedo have active fault systems. The Sierra Negra fault is associated with a sill 2 km (1.2 mi) below the caldera. The caldera on Fernandina experienced the largest basaltic volcano collapse in history, with the 1968 phreatomagmatic eruption.
Sierra Negra is a large shield volcano at the southeastern end of Isabela Island that rises to an altitude of 1124 m. [12] It coalesces with the volcanoes Cerro Azul to the west and Alcedo to the north. The volcano is one of the most active in the Galapagos, with the last eruption starting on 26 June 2018 and ending on 23 Aug 2018. [13]
The Sierra Madre Oriental, locally called the Sierra Norte, is a series of rugged mountains covered in abundant vegetation, which has had an isolating effect on the people here over the centuries. [13] The Valle de Piedras Encimadas (Valley of the Stacked Stones) is located near the town of Zacatlán. It is really a series of small valleys ...
Pico de Orizaba is located at 19°1′48″N 97°16′12″W ... A companion peak lying about six km to the southwest of Pico de Orizaba is the Sierra Negra, at 4,640 ...
One of the youngest islands, Isabela is located on the western edge of the archipelago near the Galápagos hotspot. At approximately 1 million years old, the seahorse-shaped island was formed by the merger of six shield volcanoes; Alcedo, Cerro Azul, Darwin, [11] Ecuador, Sierra Negra, and Wolf. All of these volcanoes except Ecuador are still ...