The winner of the IAG Video Contest for the period April-June 2024 is Yuichi Hayakawa (Japan)! Find below his video and descriptive text.

If you want to participate in the contest, find the rules, guidelines and details on the procedure here.

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Shichimenzan Kuzure landslide

by Yuichi Hayakawa, Japan

Located in the sub-basin of the Fuji River watershed in the Southern Japanese Alps, the large landslide “Shichimenzan Kuzure” covers an area of 3.5 hectares and continues to supply a huge amount of sediment into the rivers every year. It is not clear when exactly this landslide was formed, but according to the historical documents of the Shichimenzan Keishinin Temple, it seems to have already existed at least as early as the 1600s. The Southern Japanese Alps are one of the fastest uplifting areas in Japan, with entire mountains rising more than 4 meters every 1,000 years. At the same time, it is one of the areas with the highest erosion rates in Japan. In the long term, although seemingly unchanging, the mountain landscapes are constantly evolving, and the Mt. Shichimenzan landslide is a visible manifestation of such “movement” of the mountains.