Volcanic eruption at Litli-Hrútur, Iceland

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