The 4th PSI Condensed Mat-ter Summer Camp took place in Zuoz, Switzerland, in the picturesque canton of Graubunden and close to the beautiful destinations of St. Moritz and Pontresina. The focus of this year’s camp was “2D Materials: Insights and Opportunities at Large Scale Facilites,” and the contributors delivered a highly stimulating selection of topics related to this theme. The camp consisted of 26 invited talks in seven sessions, as well as 53 posters presented in two poster sessions accompanied by delightful standing dinners served by the staff of the Lyceum Alpinum. Many of the talks were pedagogical, befitting the summer camp style, and participants had the opportunity to ask questions three times during each talk, adding a convivial atmosphere to the high level and technical format of the conference.