The Mountain Meadows massacre was a series of attacks on the Baker–Fancher emigrant wagon train, at Mountain Meadows in southern Utah. The attacks began on September 7 and culminated on September 11, 1857, resulting in the mass slaughter of the emigrant party by members of the Utah Territorial Militia from the Iron County district, together with some Paiute Native Americans. Intending to leave no witnesses and thus prevent reprisals, the perpetrators killed all the adults and older children—about 120 men, women, and children in total. Seventeen children, all younger than seven, were spared.