Recorded first ascents of the peaks were not completed until the 1950's and most of the peaks in the range are named for ship's or people that were part of the Battle of Jutland in World War I.
History: The Opal Range was created during the Lewis Thrust. The steeply tilted strata are virtually the same in each peak, with softer layers sandwiched between harder layers. These softer layers have eroded, leaving the harder layers in place and forming the deep notches and gaps typical of the range. It was named by George Dawson because he discovered small cavities lined with quartz and coated with what he thought were thin films of opal. However, it was not Opal but a chert with a similar appeareance composed of silica imbedded with various quartz impurities.