Las Cumbres, Shield volcano on Fernandina Island, Ecuador.

Las Cumbres is a shield volcano on Fernandina Island that rises to 1476 meters above sea level with a broad, gently sloping form. Its structure consists of many layers of basaltic lava flows stacked upon one another.

On 14 February 1825, Captain Benjamin Morrell, anchored in Banks Bay, recorded one of the largest eruptions in Galápagos history at Fernandina; his ship escaped and his account survived. The caldera floor has collapsed several times, often after explosive eruptions. Fissure eruptions struck the southern flank in April 2009 and the north-northeast flank on 16 June 2018, and the volcano erupted again in January 2020 and March 2024.

Because Fernandina has no human residents, La Cumbre's eruptions are often noticed late: park rangers and a passing tourist boat first sighted the April 2009 fissure eruption at 10:00 p.m. local time on April 10. The seismic station at Puerto Ayora on Santa Cruz recorded no earthquakes linked to that event.

Fernandina has no human residents and no visitor sites on land, so La Cumbre is seen from the sea rather than climbed. Tour boats crossing the western archipelago pass Banks Bay, where Captain Benjamin Morrell anchored in 1825. Because the island is uninhabited, eruptions are sometimes first spotted from a passing boat or by park rangers, as happened at 10 p.m. local time on 10 April 2009.

The 1825 eruption witnessed by Captain Benjamin Morrell from Banks Bay is among the largest recorded in Galápagos history; his ship escaped and his written account survives. Fernandina has no human residents, so eruptions threaten only the island's wildlife, and the sparse western population means activity is not always reported at once.