https://apnews.com/0c9845f76e200e00b39d21cac0442471

MADRID (AP) — Authorities on the Spanish island of La Palma said Monday they are tightening their surveillance of an erupting volcano, after part of the crater collapsed and unleashed a cascade of more liquid and faster-moving lava.

The crater was “like a dam,” said María José Blanco, a director of the National Geographic Institute on the Canary Islands. When part of its wall collapsed, fiery molten rock poured out from a “lava lake” inside.