I take a train from Hiroshima Station to Hachihommatsu Station every morning to go to my University. When the train approaches to Hachihommatsu Station, the following scenes are seen.
There is a high bank along the rail, and the flags of Japan and U.S. are seen beyond the bank.
It is an ammunition storage of the U.S. Army that is beyond the end of the rail trail. Japan Imperial Navy evicted the residents there and constructed this storage, and the railroad was also constructed for this. Although the Imperial Navy and the rail road have disappeared now, the storage is still alive.
An aerial photo (Google Map) indicates that the rail trail continues into the strage via the gate shown in the above photo.
Appendix. Hachihommatsu Station
Hachihommatsu Station is situated at 255 meters above sea level, at the highest point of Japan Rail San'yo main line. The section from Seno Station on the base to Hachihommatsu Station is a continuous steep uphill slope, and it is the only section in Japan where pusher engines are attached to cargo trains.