She calls the seven-mile stretch of highway between east and west Hebron “Parkinson’s Valley”. View image in fullscreen Sarah Teale calls the seven-mile stretch of highway between east and west Hebron, ‘Parkinson’s Valley’. The agency has stopped short of linking exposure to Parkinson’s disease, as other government health bodies have done abroad. Hours after getting engaged in the fall of 2009, imagining the future ahead of her, she received a call: she had Parkinson’s disease. View image in fullscreen Brian Campbell, Hebron’s town supervisor, at the Hebron town court and meeting hall.