Yep. You can see it on the map in the Museo Nacional de Antropología. El periférico ("the ring highway") and other major roads follow the old causeways. I have

Yep. You can see it on the map in the Museo Nacional de Antropología. El periférico ("the ring highway") and other major roads follow the old causeways. I have been there many times in my life, maybe 30 or 40.