You searched for: Language UND Remove constraint Language: UND Place Alpena Twp. T31N, R9E, Sec. 7 SW1/4; 1/4 mile west of power generators at the Four-Mile Dam. Remove constraint Place: Alpena Twp. T31N, R9E, Sec. 7 SW1/4; 1/4 mile west of power generators at the Four-Mile Dam.