Biologist Roberto Rojo, 46, prepares to show activists and locals the Yorogana cave, which he says has been affected by the construction of the new Mayan Train route, in Playa del Carmen, Quintana Roo, Mexico, November 5, 2022. Rojo says the train will put the entire ecosystem above and below ground at risk. "They are doing studies now that needed to be done at least four years ago."REUTERS/Jose Luis Gonzalez
