Sitting squat in the middle of the endless miles of open grassland and tree-lined streambeds that the baboons frequented for food each day was the great Impenetrable Thicket. It stretched for miles along a ridge top, thick scrub and endless thorn bushes, deep aardvark holes and jagged volcanic rock, teeming with animals you wouldn’t want to meet. The previous grad students told me that the baboons couldn’t be followed there. I tried once on foot and had nearly been flattened by a rhino. Then I tried by vehicle, promptly punctured two tires, nearly snapped an axle, and then came close to being flattened by a rhino. So I gave up. Inventing the wheel was what one of the grad students claimed the baboons must be up to when they thicketed us.

— Primate's Memoir by Robert M. Sapolsky (Page 65)