The waterfall is locally referred to as 'Adsuna no Taki' in some historical records.
The rock formation at the waterfall is composed of soft tuff and sandstone, which allows for the distinctive terraced appearance.
The Yoro River valley is recognized for its late-autumn foliage, which usually peaks later than in central Tokyo.
The waterfall's width is considered among the largest for cascades in the Boso Peninsula area.
Awamata Waterfall, also known as Yoro Keikoku Waterfall, is a prominent cascade located within the Yoro River valley in Chiba Prefecture. The waterfall features a wide, terraced rock face spanning approximately 100 meters in width and 30 meters in height. It serves as the primary focal point of the Yoro Keikoku hiking trail system. The geological formation is characterized by layered sedimentary rock strata typical of the Boso Peninsula. Visitors can access the base of the waterfall via a maintained forest path that descends from the parking area. The site is a designated part of the Prefectural Natural Park, emphasizing the preservation of the surrounding riparian forest. Water volume can vary significantly based on recent rainfall patterns in the Otaki region.
From the observation deck near the start of the trail, which provides a full view of the wide, tiered waterfall face.
Wear footwear with high-traction soles, as the rocky areas near the water are frequently slick.
Bring insect repellent during the summer months due to the dense forest canopy.
Check local weather reports before visiting, as heavy rain can result in temporary trail closures for safety.
Attempting to climb or wade directly on the waterfall's main cliff face, which is hazardous and prohibited.
Stay on marked trails to prevent erosion of the soft rock and surrounding forest floor.
