The Tateyama Kurobe Alpine Route in Nagano Prefecture turns into a snow corridor with high snow walls in winter. The section of the route with "Snow Walls" is open to sightseers from mid-April to late May.
The sunken Mar Sem Fin in Antarctica. The sunken remains of the Mar Sem Fin, a Brazillian research boat is seen through the frigid waters. The boat sunk April lies about 30 ft below in Ardley Bay, Antarctica.