A stampede of Central American migrants rushed to the tracks Saturday when the first whistle of the train rang out.
After a few days in Mexico City, it was time to continue their journey north to the US border. About 500 migrants traveling in a caravan climbed onto the freight train just outside the Mexican city of Tultitlán.
They were about 1,500 miles south of the US-Mexico border as they started heading northwest to the city of Celaya.
As the train slowed down, migrants scrambled around the train cars to find a way to climb aboard, throwing small bags of belongings onto the train and hastily helping one another.
Police and guards watched from a few feet away. Some took photos. None took action to stop the migrants as they climbed the train.