Butte County Sunrise / SunsetUnited StatesSDButte CountySunset8:41 pmBelle FourcheSunset at 8:41 pmSunset8:41 pmCastle RockSunset at 8:41 pmArpanBelle FourcheBelle Fourche Municipal AirportBelle Fourche National Wildlife RefugeBelle Fourche ReservoirCastle RockFruitdaleGuidinger ReservoirHerman ParkHighland ParkHooverNewellNewell LakeNislandRocky Point Recreation AreaVale