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EuroSailor said:
the area directly around the Tulum archeological site has been turned into a cheap theme park, it saddens me somewhat.


Sailor,

Good news. There is no reason to be saddened.

There is no such development.

The theme park to which I think you are referring is probably Xplor/Xcaret (see above and far from cheap) and is about 20 miles away from The Tulum Archaeological Site.

Please check Google Earth to re-orient yourself and cheer up.