Alaska Peninsula National Wildlife Refuge
... that Mount Veniaminof in the Alaska Peninsula National Wildlife Refuge contains the most extensive crater glacier in North America, at roughly 5.2 miles (8.4 km) in diameter?
... that <a href="./Mount_Veniaminof" id="mwD4I" rel="mw:WikiLink" title="Mount Veniaminof">Mount Veniaminof</a> in the <b id="mwD4M"><a href="./Alaska_Peninsula_National_Wildlife_Refuge" id="mwD4Q" rel="mw:WikiLink" title="Alaska Peninsula National Wildlife Refuge">Alaska Peninsula National Wildlife Refuge</a></b> contains the most extensive crater <a href="./Glacier" id="mwD4U" rel="mw:WikiLink" title="Glacier">glacier</a> in <a href="./North_America" id="mwD4Y" rel="mw:WikiLink" title="North America">North America</a>, at roughly <span about="#mwt34" data-mw='{"parts":[{"template":{"target":{"wt":"convert","href":"./Template:Convert"},"params":{"1":{"wt":"5.2"},"2":{"wt":"mi"},"3":{"wt":"km"}},"i":0}}]}' id="mwD4c" typeof="mw:Transclusion">5.2 miles (8.4</span><span about="#mwt34" typeof="mw:Entity"> </span><span about="#mwt34">km)</span> in diameter?