Cumbre Vieja tsunami hazard
The Cumbre Vieja tsunami hazard refers to the risk that a volcanic eruption on the island of La Palma, Canary Islands, Spain, could cause a large landslide triggering a megatsunami in the Atlantic Ocean. Volcanic islands and volcanoes on land frequently undergo large landslides/collapses, which have been documented in Hawaii for example.
Source: Wikipedia — Cumbre Vieja tsunami hazard (CC BY-SA 4.0)