The Mountain State is criss-crossed with all-terrain-vehicle trails. The four-wheel machines are popular among hunters, farmers and those looking for an exciting ride over the state's rugged terrain. But there is a dark side to the ATV proliferation -- an inordinate number of deaths, particularly among West Virginia's children. Why is this happening? Are legislators prepared to pass safety laws after years of debate? And what about the parents and siblings left behind? Their stories provide the framework for this week-long series of articles tracing West Virginia's trail of tears.