TUTU Mountain is a full scale 3D printing installation designed as an indoor playground equipment for kids. The installation is inspired by a combination of natural elements: glacier, dune, cave, etc. We abstract and integrate these elements into a continuous terrain with slopes, slides, bumps that are designed specifically for kids. The installation was manufactured with advanced 3D printing technology using PLA. The project was designed and manufactured by Archi-Solution Workshop when Many Projects served as a project manager there. TUTU Mountain was presented at China International Cultural Industry Fair (ICIF) in Shenzhen in 2019.