Suiyo Seamount
... that Suiyo Seamount, a seamount near Japan, was thought to be extinct until a hydrothermal event in 1991 was brought to light?
... that <b id="mwDQM"><a href="./Suiyo_Seamount" id="mwDQQ" rel="mw:WikiLink" title="Suiyo Seamount">Suiyo Seamount</a></b>, a <a href="./Seamount" id="mwDQU" rel="mw:WikiLink" title="Seamount">seamount</a> near <a href="./Japan" id="mwDQY" rel="mw:WikiLink" title="Japan">Japan</a>, was thought to be <a href="./Volcano#Extinct" id="mwDQc" rel="mw:WikiLink" title="Volcano">extinct</a> until a <a href="./Hydrothermal_vent" id="mwDQg" rel="mw:WikiLink" title="Hydrothermal vent">hydrothermal event</a> in 1991 was brought to light?