Midagahara Wetland (Bijodaira Plateau)

Midagahara is a high-altitude volcanic plateau wetland along the Tateyama Kurobe Alpine Route between Bijodaira and Murodo, formed by ancient lava flows that created a mosaic of ponds and marshland dotted across the plateau at roughly 1,930 meters elevation. Visitors walk a wooden boardwalk loop trail that protects the fragile wetland vegetation while offering close views of the plateau's many small ponds, alpine grasses, and, in summer, dense wildflower blooms. The boardwalk loop takes one to two hours to complete at an easy pace, with highland bus stops at both Bijodaira and Midagahara providing access points along the Alpine Route. Late July through August brings the plateau's peak wildflower season, with skunk cabbage, cotton grass, and various alpine flowers covering the marshland; late September into early October shifts the scenery to red and gold autumn foliage across the surrounding slopes. Because the wetland sits directly along the Alpine Route's transit path, most visitors combine a stop here with the broader traverse toward Murodo or Kurobe Dam rather than visiting in isolation. The boardwalk trail's condition depends on snowmelt timing each spring, and sections may remain partially covered into June in years with heavy winter snowfall. Weather at this elevation shifts quickly, and fog can roll across the plateau even on days that are clear lower down the route.