Lake Kussharo, an inland lake in the west of Hokkaido, is a caldera lake, a remnant of a long-ago erupted volcano. Its violent, seismic past is evident even today, with natural hot springs bubbling up along its shoreline, heating both the water and gravelly shores. It is here where the Whooper Swans gather to find refuge from Hokkaido’s brutally cold winters.

Like much of Japan, Hokkaido is seismically active. Consequently, hot springs and volcanic vents can be found all across the island. Lake Kussharo, an inland lake in the western region of Hokkaido, is a caldera lake, a remnant of a long-ago erupted volcano. Its violent, seismic past is evident even today, with natural hot springs bubbling up along its shoreline, heating both the water and sandy shores. It is here where the Whooper Swans gather to find refuge from Hokkaido’s brutally cold winters.