Trevejo Eruption, Tenerife

The Trevejo, Arenas Negras or Garachico eruption began on 5 May 1706 on Tenerife’s north-western volcanic ridge. Lava travelled rapidly towards the coast and entered Garachico, then one of the Canary Islands’ principal commercial ports. The flows damaged buildings and buried the harbour that linked the town’s wine and sugar trade with Europe and the Americas.

The eruption caused no confirmed deaths, but its economic and social consequences were severe. Residents evacuated threatened districts, trade shifted to other ports and Garachico never recovered its former commercial dominance. The event demonstrates how an apparently local natural disaster could redirect settlement and commerce across an Atlantic island economy.

Kate Mosse’s The Black Mountain turns the warning signs and communal danger of the 1706 eruption into a compact survival story. Its young protagonist must persuade neighbours to act before certainty is possible, making the historical disaster a study of observation, authority, family responsibility and evacuation.