New Zealand Railways Round Hill area. Roxburgh Branch 1968. Roxburgh was a difficult branch to operate with heavy grades and sharp curves facing trains in either direction. On the day we visited there was a largish train in either direction, each train had two locomotives for a portion of the trip and both trains doubled the hill at least once while they progressed along the branch, the locomotives were interchanged between trains to speed operations. In this photo the locomotives are taking the rear of the opposing train up the hill away from the photographer.