At the mouth of the Río Filobobos (known as Río Bobos and famous for its rapids), head 60km inland from Nautla on Hwy 129 and you’ll hit Tlapacoyan, where a handful of rafting companies are based, and where the waterfall Cascada de Encanto provides a gorgeous swimming spot. Tlapacoyan itself is fairly unexciting agricultural town, surrounded by banana plantations and citrus fruit groves, but it's worth an overnight stopover, if only to visit the two exciting and recently discovered archaeological sites nearby, Caujilote and Vega de la Peña, collectively referred to as Filobobos.