The waterfall was discovered by the monk Kukai (Kobo Daishi) over 1,200 years ago.
It is officially designated as a sacred site for Buddhist ascetic practices.
The surrounding forest consists of cedar trees that are approximately 400 years old.
The fall drops over a basalt rock face formed by volcanic activity from Mount Chokai.
Tamasudare Falls is the tallest waterfall in Yamagata Prefecture, measuring 63 meters in height and 5 meters in width. Located within the Mount Chokai volcanic range, the waterfall is surrounded by a dense forest of ancient cedar trees. The site is historically significant as a place of ascetic training for Buddhist monks, specifically those of the Shingon sect. Visitors reach the falls via a well-maintained walking trail through a cedar grove. The waterfall's name, 'Tamasudare,' translates to 'jeweled bamboo blind,' describing its cascading appearance. The area remains a natural site with no significant commercial infrastructure on-site. The falls are fed by snowmelt from the Chokai Mountains, maintaining consistent flow throughout the warmer months.
From the wooden observation deck located at the end of the trail, which provides an unobstructed view of the entire fall.
Wear sturdy, non-slip footwear as the path near the waterfall basin can be damp and mossy.
Bring insect repellent during the summer months as the humid, forested environment attracts mosquitoes.
Carry a rain jacket or waterproof shell, as the spray from the 63-meter drop creates a constant mist near the basin.
Attempting to climb the rock face or wading into the basin, as the area is designated for preservation and spiritual practice.
The access road and trails may be closed during heavy winter snowfall due to safety concerns.
Maintain a quiet tone as the site is considered a spiritual training ground for local monks.
