Black Otter Trail Historic District ID: 2395 | This file appears in: Black Otter Trail Historic District Road marker and rock formations, view to southwest | Creator: Kristi Hager | Date: May 2005 | Source: Montana Department of Transportation Download Original File CreatorKristi HagerSourceMontana Department of TransportationDateMay 2005 "Black Otter Trail Historic District" appears in: Black Otter Trail Historic District