Diamond Head, Hawaii

Here is a little bit of background on this recognizable mountain from Wikipedia: Diamond Head, Hawaii.

Diamond Head is a volcanic tuff cone on the Hawaiian island of Oʻahu and known to Hawaiians as Lēʻahi, most likely from lae 'browridge, promontory' plus ʻahi 'tuna' because the shape of the ridgeline resembles the shape of a tuna's dorsal fin. Its English name was given by British sailors in the 19th century, who mistook calcite crystals on the adjacent beach for diamonds.

I decided to jump from the East Coast to the state that the is the furthest west.