here is the problem "Large Window" I thought that the Kogurobe Valley side of Koru would be a snowdrift and would be suitable for making a snow cave, but when I looked at it, the slope of the snow surface and the amount of snow looked unstable, and here Do you do your best to dig a suspicious slope?What should I do if it is not suitable after digging?If you climb one more step and go down from the top of Ikenohirayama to Ikenohiragoya, snow fields will remain even in summer.