Iceland is well-known for its volcanos, many of which are on the south coast and could have been seen by Irish sailors  The volcano Litli-Hrútur, near the south west coast of Iceland, erupted in July 2023.

    Navigatio Brendani 23.3:

    audiērunt sonitūs follium sufflantium quasi tonitruum, atque malleōrum collīsiōnēs contrā ferrum et cūdēs


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