On May 10 1869, Union and Central Pacific Railroads joined their rails at Promontory Summit, Utah Territory and forged the destiny of a nation. At that time, two steam engines marked the monument with a loud thrust of steam and blowing of engine whistles.
Steam Engine Pulls Into Cache Valley Station
![](https://npr.brightspotcdn.com/dims4/default/4285c71/2147483647/strip/true/crop/2048x2048+0+0/resize/880x880!/quality/90/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2Flegacy%2Fsites%2Fupr%2Ffiles%2F201705%2FTrain.jpg)