Florida Sinkhole Poster
March 12, 2013 | Florida Geological Survey
The Florida Geological Survey has an informative poster titled "Florida's Sinkholes". It shows their geographic distribution, explains how they form, describes different sinkhole types, explains why they are a hazard and explains what to do if a sinkhole occurs near your home.
Sinkhole Collapse Destroys Florida Resort Building
August 13, 2013 | NBC News
A 40-foot-wide sinkhole collapsed under a three-story building at a resort near Disney World. The occupants were frightened out of the building shortly before the collapse.
Sinkholes in Arizona
March 10, 2013 | Tucson Citizen
The Tucson Citizen has an article about sinkholes in Arizona. Like in Florida, karst features in Arizona can develop over limestone, but gypsum and salt can also support karst topography.
Publications from the Arizona Geological Survey include:
Home Buyer's Guide to Geologic Hazards in Arizona
Land Subsidence and Earth Fissures in Arizona