Down at Dusk - Passing Hill 582 [2011 Winter Solstice Study] The sharp lines of the Cajon ridge tops in the background and the harsh look of the Chaparral at dusk on the shortest day of the year (the Winter Solstice) contrasts against the familiar orange and green of westbound BNSF stack train as it approaches Hill 582 while the sun sets behind in the distance over the Pacific Ocean.