Students in 2009 Yonsei International Summer School visited DMZ to get a vivid sense of the division of Korean peninsula. On 31 July, Professor Lucia Pigozzo, Mohapatra Prasant, Daniel Riera-Crichton and some 100 students had a tour of USAG Yonsan, En route DMZ, OP Dora, Tunnel 3, and UNCMACHA/Joint Security Area. While visiting the sights, the tour participants expressed deep concerns about the reality of the two Koreas, as well as their hope to see the peaceful unification of the two countries.