This Geotechnical Special Publication contains 71 papers presented at the Eleventh Multidisciplinary Conference held September 22-26, 2008, in Tallahassee, Florida. The topics discussed 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 human infrastructure. ""Sinkholes and the Engineering and Environmental Impacts of Karst"" will be valuable to geotechnical engineers, environmental engineers, and all those involved in sinkholes and the impacts of karst.