The Base Camp was not only built over many VC tunnels, but right in the middle of a peanut patch
See Woody Gardner's video (Reunion 2018)
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Tropic Lightning News Article "Freedom Fighting Troopers Keep Marching on"
"... the entire 3d Brigade of the 25th Division was airlifted from Hawaii to the Central Highlands of Vietnam at Pleiku. At the same time, the Division's 2d Brigade left by sea for Vung Tau. By the end of January the 2d Brigade was firmly situated in the middle of a peanut patch at Cu Chi. Viet Cong would no longer dance victoriously down the streets of Cu Chi ..."
Tropic Lightning News Article Vol2 No 3. Jan 20 1967
"Don't mention peanuts or rice paddies to the members of the Class II- IV section, 25th Infantry Division Supply and Transportation (S&T) Battalion, or they're apt to pitch a loose boot at you. For one year these "Tropic Lightning" providers have been trying to turn a soggy paddy, peanut infested lowland swamp into a modern supply storage and distribution point."
Willy's Place: Vietnam Veterans Log #1 - Manchu, "..... in the lead element that pulled on into the peanut field, that later became Cu Chi"
Comments
Bruce Powell: I spent a year and a half at Cu Chi and never noticed a single peanut. Some people are more observant than others.