[Machine Translation] The train is Japan's only apto train running slowly through the valley of Oku Oi in the upper reaches of the Oigawa River, and was originally built for the construction of a dam on the Oigawa River system. The train offers many attractions such as the steepest grade of 90 , the tallest bridge in Japan (Sekinosawa Bridge), and the station on Lake Oku Oi that looks as if it is floating on the lake. This time, we recorded an observation video of the Igawa Line running from Senkashira Station to Igawa Station during the autumn foliage season. Please enjoy the rich nature of Oku Oi in the autumn foliage on the red trolley train.