the Omaha Zoo Railroad's logo: a Union Pacific shield with a smiling tiger superimposed over it. Though the direct references to Union Pacific place names have faded over the years, UP's support of the zoo railroad has remained strong. For years the train equipment was trucked to the Union Pacific's Omaha shops for winter maintenance, and when the shops closed much of the machinery was donated to build a new shop on site at the zoo. The Union Pacific Engine House, as this building is called, was dedicated in July 1994. Union Pacific crews continue to maintain the crossing signals along the zoo railroad's route. During the 1970s the Omaha Zoo Railroad and the zoo as a whole saw large increases in attendance. Especially on the weekends, it became evident that the original four car train could not provide the needed capacity, and a search was begun for a second train. By chance, a small tank locomotive of Austrian Heritage named "Riva" was found in Romania and its owner, Plasser & Theurer, was willing to donate it to the zoo. The locomotive was restored in the UP's shops and entered service at the zoo in 1976, together with two extra cars that were purchased to augment the original four. Kenefick Station was added in 1981 allowing guests to board the train closer to the zoo's main entrance. In late 2014, the Kenefick station was demolished and the track was shortened to make room for plans of a new exhibit. (African Grasslands) A new Kenefick Station was opened in 2015, across the visitor pathway from the African Lodge. In the early years the train commonly ran figure eights through the zoo using the connecting track and often reversed direction on the wyes. This practice ended in the early 1970s due to the need for faster turnarounds and the new locomotive's inability to negotiate a tight curve on the north (Bailey) wye. The connecting track lay idle for two decades before finally being removed in the mid-1990s, retaining a short section of track on the western side, and a wye at the eastern end, which were used for storing railcars not in use. These last remnants of the connecting trackage were removed in 2016, with new sidings for storing rolling stock installed just beyond the Omaha depot. Today the trains circle the park in a clockwise direction, covering roughly and taking 15–20