Tukgahgo Mountain
... that during sampling in 1991, a geologic formation near Tukgahgo Mountain was informally named "Chilly"?
... that during sampling in 1991, a <a class="mw-redirect" href="./Geologic" id="mwOg" rel="mw:WikiLink" title="Geologic">geologic</a> <a class="mw-redirect" href="./Rock_formations" id="mwOw" rel="mw:WikiLink" title="Rock formations">formation</a> near <b id="mwPA"><a href="./Tukgahgo_Mountain" id="mwPQ" rel="mw:WikiLink" title="Tukgahgo Mountain">Tukgahgo Mountain</a></b> was informally named "Chilly"?