The Cape Disappointment Lighthouse was first lit in 1856 and is the oldest functioning lighthouse on the West Coast of the USA. This Historic Lighthouse, located on a 200-foot-high cliff in Cape Disappointment State Park, Washington State, was constructed to alert sailors entering the nearby river bar known as "the graveyard of the Pacific." Cape Disappointment headland is so named due to English Captain John Meares avoiding a hazardous river bar in 1788 while on an expedition to find a Gateway to the Pacific Ocean. Four years later in 1792, American Ship Captain Robert Gray crossed over that dangerous bar and named the river after his ship the 'Columbia' but he did not travel through to the Pacific Ocean.