deppe -- >> the name tren maya is a disgrace. the maya people, are the ones who bear this proud name, but nobody has spoken to us. >> this is not true. we are in contact with all groups and there will be further consultations. because of the pandemic, contact might have been reduced a little. but again, if anyone benefits from the train, it's the indigenous people. >> but, once again, many indiginous people feel that their concerns have not been taken into account. the last stop on our journey is the bacalar lagoon. a turquoise paradise, which is also under threat. biologist melina maravilla regularly takes water samples here with alarming results. >> bacalar has such vivid colors but if the pollution continues like this, this could get dangerous and very quickly. >> for a lg time, th place was an insid's tip, bunow the visitors have arrived and with them the hotels, garbage, , and sewage. the lack of sewage treatment plants and the shortage of water have become a huge problem and as of the tren maya is expected 2023, to bring tho