Geostage Construction Method was adopted as the foundation of Unit Cap Construction Method as a restoration work for the place where the existing large block collapsed due to localized torrential rain. Due to concerns about insufficient bearing capacity of the foundation ground and restrictions on excavation on the mountain side, it was adopted as a construction method that meets these requirements.

Wall height (m): 10.2, Wall gradient: 1:0.3, Estimated wall area (m2): 230