Proceedings of the 11th Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst, held in Tallahassee, Florida, September 22-26, 2008. Sponsored by Geo-Institute of ASCE. This Geotechnical Special Publication contains 73 papers concerning the unique problems and innovative solutions connected with karst terrain. The papers strike a balance between the environmental and engineering aspects of working in karst and sinkhole-prone areas. The volume reflects a distinct shift to integrated approaches for investigations and the expanding range of tools that are available to engineers and scientists. Topics include: formation of karst and sinkholes; application of geophysics; GIS morphing and computer databases; unique investigation techniques; risk assessment; hydrology of Woodville Karst Plain; water management, monitoring, and remediation, modeling in karst; groundwater tracing; planning and regulation; foundation design and construction; sinkhole mitigation and repair; grouting techniques; and engineering man's infrastructure.