the decreasing industrial activity in several regions of argentina caused some freight railway lines to also be closed, such as pereyra-punta lara-ensenada (in the port of la plata zone) in 1978. one year later, the la plata-magdalena-atalaya and rufino de elizalde-lezama-las pipinas (served by passenger and freight trains that contributed to the commercialization of milk and cattle in the region) were also closed.