Lough Neagh in Northern Ireland.
<p>Shoreline data from GSHHS ("high" detail level), country boundary from the CIA World DataBank, both public-domain data sources.
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<h2><span class="mw-headline" id="See_also">See also</span></h2>
<a href="//commons.wikimedia.org/wiki/File:Ireland.svg" title="File:Ireland.svg">Ireland.svg</a> — more generic map, derived from this one
<a href="//commons.wikimedia.org/wiki/User:Wereon" title="User:Wereon">Wereon</a>
<span class="int-own-work" lang="en">Own work</span>