Hekla volcano in Iceland is showning signs of unrest. Signs of possible magma movement under the volcano has been detected for the past few days. Since 1970, Hekla volcano has erupted about every 10 years. The initial phase of each Hekla eruption is always highly explosive. The duration and magnitude of the explosive phase is directly correlated with the length of the preceding repose period. Hekla is the most active volcano in Iceland, and one of the world's best known volcanoes.
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