first was to expose the lower half of the body to any VC waiting in the side tunnel. He would be happy to drive a needle-pointed bamboo spear deep into the groin or entrails of the dangling GI before scooting backwards into the darkness. By the time the dying American had been hauled back up, with the haft of the spear scraping the walls and the venom-poisoned tip ripping at the bowels, chances of survival were minimal.
To go down head first meant risking the spear, bayonet or point-blank bullet through the base of the throat.
The safest way seemed to be to descend slowly until the last five feet, then drop fast and fire at the slightest movement inside the tunnel. But the base of the shaft might be twigs and leaves, hiding a pit with punji sticks. These were embedded bamboo spears, also venom- tipped, that would drive straight through the sole of a combat boot, through the foot and out of the instep. Being fish-hook carved and barbed, they could hardly be withdrawn. Few survived them either.
Once inside the tunnel and crawling forward, the danger might be the VC waiting around the next corner, but more likely the booby traps. These were various, of great cunning and had to be disarmed before progress could be made.
Some horrors needed no Vietcong at all. The nectar bat and black-bearded tomb bat were both cave dwellers and roosted through the daylight in the tunnels until disturbed. So did the giant crab-spider, so dense on the walls that the wall itself appeared to be shimmering with movement. Even more numerous were the fire-ants.
None of these was lethal; that honour went to the bamboo viper whose bite meant death in thirty minutes. The trap was usually a yard of bamboo embedded in the roof, jutting downwards at an angle and emerging by no more than an inch.
The snake was inside the tube, head downwards, trapped and enraged, its escape blocked by a plug of kapok at the lower end. Threaded through this was a length of fishing line, heading through a hole in a peg in the wall on one side, thence to a peg across the tunnel. If the crawling GI touched the line, it would jerk the plug out of the bamboo above him and the viper would tumble onto the back of his neck.
And there were the rats, real rats. In the tunnels they had discovered their private heaven and bred furiously. Just as the GIs would never leave a wounded man or even a corpse in the tunnels, the Vietcong hated to leave one of their casualties up above for the Americans to find and add to the cherished 'body count'. Dead VC were brought below and entombed in the walls in the foetus position, before being plastered over with wet clay.
But a skim of clay will not stop a rat. They had their endless food source and grew to the size of cats. Yet the Vietcong lived down there for weeks or even months on end, challenging the Americans to come into their domain, find them and fight them.
Those who did it and survived became as accustomed to the stench as to the hideous life forms. It was always hot, sticky, cramped and pitch dark. And it stank. The VC had to perform their body functions in earthenware jars; when full, these were buried in the floors and capped with a tampon of clay. But the rats scratched them open.
Coming from the most heavily armed country on earth, the GIs who became Tunnel Rats had to cast all technology aside and return to primal man. One commando knife, one handgun, one flashlight, a spare magazine and two spare batteries were all that would fit down there. Occasionally a hand grenade would be used, but these were dangerous, sometimes lethal, for the thrower. In tiny spaces, the boom could shatter eardrums but, worse, the explosion would suck out all the oxygen for hundreds of feet. A man could die before more could filter in from outside.
For a Tunnel Rat to use his pistol or flashlight was to give his position away, to announce his coming, never knowing who crouched in the darkness up ahead, silent and waiting. In this sense, the VC
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