What factors were critical in the evolution of bipedalism? Consider morphological changes as well as the adaptive benefit that bipedalism would have brought our earlist hominid ancestors.

The tunnels were reported to be 250 kilometers long and most of the tunnels were located in Cu Chi . There were three levels to the VC tunnels . In the first level , the opening was three meters deep . As one goes deeper into the tunnel , it would widen and be about six meters deep . The third level of the tunnels was eight meters below the ground

An Underground Battle Station

In the tunnels , it was like a whole word underground . There were kitchens , there was a hospital , and the officers ' quarters were there as

br well as a meeting room . During that time the tunnels were almost inaccessible . It was hidden in a jungle-like area . During the war it was ravaged by a skin-burning chemical Agent Orange that was part of the American counterattack . Some tunnels were also too narrow for an overweight Westerner

The tunnel system included different sizes of chambers , rest areas weapons and ammunitions storage , kitchens , workshops , barracks room as well as rooms that housed the communication equipments . The kitchens was designed so well the smoke that could signal the Americans of their location were dispersed and dissipated into numerous pipes that would mislead anyone who would see it

The tunnels of Cu Chi were the venue where the Viet Cong fighters and the American Tunnel Rats , as they call those brave enough to penetrate the tunnels , would go into hand-to-hand combat inside dark and dangerous subterranean and complex tunnels . These tunnels were where they fought to death using knives and pistols

The Little IRT

The tunnels of Cu Chi were known as the Little IRT . They were similar to the railway system in America with an interconnecting tunnel system that was in the northern section of Hau Nghia Province and in the southwester section of Binh Duong Province...