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Chubu-Sangaku NP, Toyama
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Murodo’s north building dates to 1726 and its south building to 1771. Built with support from the Kaga lords, they sheltered Tateyama worshippers and later served as a mountain hut; both are now Important Cultural Properties.
A local legend says young Saeki no Ariyori followed a white hawk and a wounded bear to a cave near Murodo. Inside, the bear and hawk revealed themselves as Amida Buddha and Fudo Myoo, who urged him to open Tateyama to pilgrims.
Numbered stone Kannon figures once guided pilgrims along about 30 km of the Tateyama approach, echoing the famous Saigoku pilgrimage. The 33rd figure stood at Murodo, marking the high-mountain end of the route.
Mikurigaike’s name is linked to 御厨, meaning a deity’s kitchen. Local tradition says its water—and food prepared with it—was offered to Tateyama’s gods, giving this volcanic lake a role in worship as well as scenery.
Tunnel work beneath Mt. Oyama brought spring water to the surface at Murodo. The Ministry of the Environment notes that one estimate puts the snowmelt’s time underground at about 250 years; when it emerges, the water is just 2–5°C.
Murodo’s red Chinoike, or “Blood Pond,” became part of Tateyama’s imagined afterlife: old religious stories said women who broke the mountain’s entry ban could fall into Blood-Pool Hell. This is folklore, not a description of the lake’s origin.
When women were barred from climbing Tateyama, devotees at Ashikuraji below Murodo crossed Nunobashi in a ritual believed to bring the same purification as ascending the sacred mountain. The crossing turned exclusion into a distinct path of worship.
Ranger photographs from Murodo capture ptarmigans changing from winter white: one April 14 image shows a bird all white, a May 5 image shows feathers in transition, and a June 3 image shows a male in summer plumage.
In 2021, a survey centered on Murodo and covering 1,070 hectares estimated at least 324 adult rock ptarmigans—10% more than in 2016. Researchers based the estimate on sightings and the birds’ breeding territories.
Mikurigaike has no obvious stream outlet, yet rainwater does not simply collect like water in a bowl: it seeps underground toward Jigokudani. The calm-looking crater lake is quietly connected to the steaming valley below.
Murodo’s famous Snow Wall is not a natural ice cliff: crews clear the road through a deep drift, revealing walls over 15 m high. The exposed corridor stretches for about 500 m, and its height changes with the year’s snowfall.
