Several new vents have opened in the volcano on the La Palma island that has been spewing lava since September 19. New vents have started releasing lava that is flowing fast down a ridge.
The lava is threatening infrastructure and homes in areas that were till now unaffected, authorities on the Spanish island said on Sunday.
The molten rock coming out from the main new vent has been advancing at a speed of 6 meters per minute towards areas unspoiled until now.
The eruption on the island, which lies on the western end of the Canary Islands archipelago, in the Atlantic Ocean, began on September 19.
In the 10 weeks since then, at least 11 different lava flows have been identified by scientists, covering at least 1,100 hectares of land, including thousands of homes, roads, power lines and irrigation pipes.