A volcanic eruption could destroy the Icelandic town of Grindavik or lead to extensive ash clouds, experts have warned. The country has been shaken by more than 800 small earthquakes today alone, prompting fears that the tremors could disrupt the Fagradalsfjall volcano on the Reykjanes peninsula in the southwest of the country. Almost 4,000 people were evacuated from Grindavik over the weekend as authorities feared that molten rock would rise to the surface of the earth and potentially hit the coastal town and a geothermal power station. Select residents of the town have been allowed to return briefly this week to save valuables and care for animals and pets. Ragga Agustsdottir, who lives close to Grindavik, said residents were fearful of what could happen if an eruption struck. “The scenario on the table now is that it will happen in or just north of the town of Grindavik. There’s no good option here,” she told The Independent. On Tuesday authorities scrambled to build a defence wall around the Svartsengi power plant, located just over six kilometers from Grindavik, to protect it from lava flows amid fears of an eruption. Read More Iceland earthquakes: Huge cracks appear on roads in volcano-threatened town Iceland earthquakes: Are flights still running amid fears of volcano eruption? Is it safe to travel to Iceland? Your rights if you have a holiday booked Could an Icelandic volcano ground flights like in 2010?