What endorsement provides coverage for sudden earth collapse due to underground limestone?

The endorsement that provides coverage specifically for sudden earth collapse due to underground limestone is known as the sinkhole collapse endorsement. This endorsement is designed to address unique geological features that can lead to sinkholes, which are depressions or holes that occur when the ground collapses due to the dissolution of soluble limestone or other materials.

Sinkholes can happen suddenly and may cause significant property damage as a result of the ground giving way. The sinkhole collapse endorsement ensures that homeowners and property owners are covered for the damages resulting from the collapse associated with sinkholes. In Florida, where the geological composition includes limestone, this kind of endorsement is especially important due to the prevalent risk of sinkholes in certain areas.

In contrast, other endorsements mentioned in the options focus on different types of earth movement. For instance, the mine subsidence endorsement generally addresses damage due to the collapse of land over abandoned mines, while the earthquake endorsement covers seismic activity, including ground shaking and structural damage from earthquakes. Earth subsidence refers more broadly to gradual sinking or settling of the ground rather than the sudden collapse that is characteristic of sinkholes. Each of these endorsements caters to distinct geological risks, making the sinkhole collapse endorsement the most appropriate choice for coverage of sudden earth collapse related to underground limestone.