the longest place name in the world is
Llanfairpwllgwyngyllgogerychwyrndrobwllllantysilio gogogoch
its it Wales
in Icelandic we got plenty of nasty places...

:
Fáskrúðsfjörður
Króksfjarðarnes
and the longest Icelandic word is :
Vaðlaheiðarverkfærageymsluskúr
(Basicly means "A toolhut that is located on Vaðlaheiði"
And
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Keldorn's Younger brother