Hurricanes don't "go over land" in the sense that they intentionally seek out land. Hurricanes are driven by the warm waters of the ocean and cannot sustain themselves over land for very long. However, they can make landfall, where they come into contact with land.

When a hurricane makes landfall, several things happen. The hurricane's winds can cause damage to buildings, infrastructure, and vegetation. The storm surge can cause flooding, and the heavy rains can lead to landslides and mudslides. The storm surge and waves can also cause erosion and damage to coastal ecosystems.

In addition, hurricanes can spawn tornadoes, which can cause further damage. The combination of these factors can make hurricanes very dangerous for people living in coastal areas.