Second sinkhole appears in Florida On Monday, demolition crews returned to Bush's home to demolish the rest of the house before efforts will begin to stabilise the sinkhole. Two nearby houses have been evacuated because the sinkhole has weakened the ground underneath them, and their residents probably will never be allowed inside again, said Jessica Damico of Hillsborough County Fire Rescue. Jeremy Bush said the family was discussing plans for a memorial service and a possible marker at the site. "I'm the only one who tried to get him out," he said, while begging county authorities to do more to find his brother's body when the lot is cleared. Sinkholes in Florida are caused by the state's porous geological bedrock, according to the Florida Department of Environmental Protection. As acidic rainwater filters into the ground, it dissolves the rock, causing erosion that can lead to underground caverns, which cause sinkholes when they collapse. The latest sinkhole did not cause any injuries or structural damage to the homes around it.