Hajj metro prepared for annual seven-day operating season
http://www.metro-report.com/news/news-by-region/middle-east-africa/single-view/view/hajj-metro-prepared-for-annual-seven-day-operating-season.html
Though I've heard there is a metro system in Mecca, I didn't know the metro is operated only during Hajj.
So, it's too difficult for me to take pictures of the train, because I have to be converted to Muslim and have to visit the holy city during Hajj.
I won't be encouraged to do so just for only one type of the train.