The Ho Chi Minh trail was not a single trail, but rather a network of trails and dirt roads that lead from North Vietnam to South Vietnam through Laos and Cambodia in the bloody years of the Vietnam War. The Viet Minh, who were based in North Vietnam and led by Ho Chi Minh, used it to supply their allies in the South, the Viet Cong, with arms and men, so they could fight the Americans and the South Vietnamese army. Since both Cambodia and Laos were officially neutral, the Americans decided to secretly bomb the area where the Ho Chi Minh trail went through. Just in Laos, the Americans dropped more than 2 million tons of bombs, making Laos one of the most heavily bombed countries in the world. Today there isn't much evidence of the Ho Chi Minh trail, but at the dirt square in Pa-am village you can still see a Russian surface-to-air missile launcher (with missile) that the North Vietnamese troops managed to drag down here.