The Flag of British Columbia, Canada is based upon the shield of the provincial arms of British Columbia. At the top of the flag is a rendition of the Union Flag, defaced in the centre by a crown, representing the province's origins as a British colony, with a setting sun below. The four wavy white and three wavy blue lines symbolize the province's location between the Pacific Ocean and the Rocky Mountains. The setting sun represents the fact that British Columbia is Canada's westernmost province.