At sumidero canyon you will enjoy a motor boat cruise through the middle of this spectacular canyon the road descends more than 1500 meters and reaches the grijalva river where the sumidero canyon has cliffs from 100 to 1000 meters high in this national park it is very often possible to see local wildlife such as crocodiles spider monkeys and white and gray herons san juan chamula is a town steeped in history and yet also allows a look into the mayas of today this is the largest maya tow