Accessible from May to October, Yudono-san (1504m) is the spiritual culmination of the Dewa Sanzan trek. Coming from Gas-san, it's a short walk from the stream bed at the end of the descent to Yudono-san-jinja . It's forbidden to photograph and taboo to discuss this sacred natural shrine, so you'll just have to find out for yourself. It's quite remarkable. Strict rituals prevail: remove your shoes, bow your head before the priest for purification rites then follow the other pilgrims.
To finish the pilgrimage, it's a mere 10-minute hike down the mountain to the trailhead at Yudono-san Sanrōsho (湯殿山参籠所), marked by a torii (gate) and adjacent to the Sennin-zawa (仙人沢) bus stop.
