The Geostage Construction Method was adopted as the foundation of the Unit Cap Construction Method as a restoration work for the place where the existing large block collapsed due to 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
• Approximate wall area (m2): 230