Henry Seamount
... that Henry Seamount was hydrothermally active in the last 4,000 years even though it is 126 million years old?
... that <b id="mw4g"><a href="./Henry_Seamount" id="mw4w" rel="mw:WikiLink" title="Henry Seamount">Henry Seamount</a></b> was hydrothermally active in the last 4,000<span id="mw5A" typeof="mw:Entity"> </span>years even though it is 126<span id="mw5Q" typeof="mw:Entity"> </span>million years old?