ATV accidents are the second leading cause of death. Quarries and surface mines are dangerous places to ride an ATV. Riders unfamiliar with the quarry can speed over a quarry’s high wall or embankment. Death can result when an ATV is driven too close to a high wall and the rock, previously fractured from blasting, collapses from vibrations or weight. ATV riders have been killed by driving into wire fences at high speeds and losing control on gravel or sand-covered surfaces.