Sandboarding · Maranhão stateSandboarding & lagoon trekking, Lençóis MaranhensesADVANCEDRisk: MODERATEBRL Guided day trip R$150–2…A vast field of blindingly white sand dunes that, counterintuitively, fills with thousands of crystal-clear freshwater lagoons during the rainy season — sandboarding the dune faces by day and swimming turquoise lagoons that didn't exist months earlier make this one of the more surreal entries on this list.View details