Says the sign, "Gold was discovered in the nearby Castle Mountains in December 1907 by Jim Hart and the Hitt Brothers, Bert and Clark. The town of Hart quickly sprang up. Its five hotels and eight saloons served a population of about 400. The relatively quiet town had neither a church or a school. Hart had its own newspaper during 1908-1909. The nearest rail connection was 3 1/2 miles northwest at the siding of Hitt. The mines played out after ten years and the town was deserted."