Keynote Lectures

	Exploiting the Potential of Underground Space in Cities Eng Hwee Lim and Richard Hoo
	Creation of Space in Rock Caverns in Singapore — Past, Present and Future Pao Chuen Lui, Jian Zhao and Yingxin Zhou
	Underground Urbanization Pierre Bélanger
	Safety Challenges in Complex Underground Infrastructures Felix Amberg and Marco Bettelini
	0-Land_Use: Underground Resources and Master Plan in Helsinki Ilkka Vähäaho
	City Resiliency and Underground Space Use Raymond Sterling and Priscilla Nelson
	Underground Urban Complexes Development in China Qihu Qian