It crashed into a concrete wall before tumbling over on to its side. Daniel Castro thought he had lost everything. "There was a terrible noise, the carriage lurched and we were tumbled over and over," Castro, 34, said. "The lights had gone out, it was silent and in that moment I thought 'Oh God, my family is dead, I am all alone here'. Then all at once I heard the cry of my infant daughter, my son calling out and my wife screaming and I knew they were alive."
The family was travelling in the preferente - first class - section of the train, the last carriage before the rear engine, having found the seats on special offer for a two-day return trip to Madrid.
When they emerged they had to crawl beneath two other carriages wedged in the air, creating a triangle of space beneath to escape the fires that had already broken out.
"The horror of that scene was unimaginable," Yesica said. "People were walking around like zombies. There were bodies lying twisted, some trapped beneath carriages, others at windows trying to get out, all around people were calling out for help. There was blood everywhere."
Local villagers then started to run down the hill towards the stricken trains. "They pulled us up to safety but I wouldn't let the baby out of my arms."