Nine experienced ski hikers in the northern <a href="https://en.wikipedia.org/wiki/Ural_Mountains" id="mw-w" rel="mw:WikiLink" title="Ural Mountains">Ural Mountains</a> in the <a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mw_A" rel="mw:WikiLink" title="Soviet Union">Soviet Union</a> <a href="https://en.wikipedia.org/wiki/Dyatlov_Pass_incident" id="mw_Q" rel="mw:WikiLink" title="Dyatlov Pass incident">die under mysterious circumstances</a>.