The Cumbre Vieja volcano on the Canary Island of La Palma has shot lava into the air in loud bursts while toxic ash blanketed the surrounding area.
Thursday is the fifth day that lava flowing down the slopes of the volcano has engulfed houses, schools and banana plantations, although more slowly than in previous days.
"Everything that started on Sunday as something out of the ordinary, something beautiful to watch, turned into a tragedy the next day," said Nancy, who owns a local jewellery business.
"I have many friends there, families who have lost everything. Our hearts are broken."
Streams of black lava have advanced slowly westward since Sunday, incinerating everything in their path, including houses, schools and the banana plantations that produce the island's biggest export.
The lava has destroyed nearly 200 houses and forced thousands of people to flee.
Property portal Idealista estimated the volcano had so far destroyed property worth around 87 million euros ($A141 million).
Spanish banking associations offered to provide vacant properties held by banks to people who have lost their homes.
Local authorities have warned people to clean vegetables and clothes to avoid ingesting the toxic ash.
A cloud of sulphur dioxide is expected to move east in the coming hours over the rest of the Canary archipelago, the Iberian peninsula and the Mediterranean.
Australian Associated Press