Charles Raymond Beazley,
1911 Encyclopædia Britannica, Volume 8…
(1911)
“ Irish hermits had visited Iceland; on their return they reported the marvel of the perpetual day at midsummer in “Thule,” where there was then “no darkness to hinder one from doing what one would.” These eremites also navigated the sea north of Iceland on their first arrival, and found it ice-free for one day’s sail, after which they came to the ice-wall. Relics of this, and perhaps of other Irish religious settlements, were found by the permanent Scandinavian colonists of Iceland in the 9th century. ”
