The terrifying sounds that hint Iceland's volcano is ready to blow

Iceland is bracing for a massive volcanic eruption that could wipe out an entire town, release toxic fumes and trigger widespread disruption.

The country has ordered evacuations and declared a state of emergency as seismic activity ramps up around the Fagradalsfjall volcano, which is expected to blow in the coming days.

Now, members of the public can listen to what this unnerving rumbling actually sounds like thanks to an app which transforms seismic frequencies into audible pitches.

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