Central of Georgia Railway The branch line to Durham, high atop Lookout Mountain to the west, departed the main line at the town of Chickamauga. It was built as the Chickamauga & Durham Railroad in the early 1890s. From map Maneuver Grounds, Chickamauga Park and Vicinity, by Frank P. Amos, 1917. Entire map is online at University of Alabama Historical Map Archive.    Georgia's Railroad History & Heritage. Copyright, Steve Storey. Railroad History | The Depot List | Locomotives On Display | Odds & Ends | Sources & References | Home