Crater Lake is an installation - environment where people have a place to meet to observe the beauty of the surrounding environment and more importantly casually sustain social interactions. The installation is situated in the man-made Port Island, Shiosai Park that provides a vast view of the Kobe urban center, its surrounding mountain-scape and seascape. Design intent of Crater Lake installation is emphasizes this unique location by creating an undulating wooden landscape that provides a variation of open and unconstrained settings with 360° viewing vista. Every surface may be utilized as a seating and lying down surface. Additional seating stools are set in the middle of the space that can be reorganized accordingly to the user's preferences. The gentle hill surfaces invite people of multiple generations by providing various spatial conditions to interact with the landscape space like a playground device, relax in the shade of the mount, and socialize by seating in preferred order.