Costa Rican authorities restricted the visit time to Poas Volcano crater after experts confirmed the emission of gases with toxic particles that may cause health problems. The decision was made after studies carried out by the Volcanological and Seismological National Observatory and the Analysis Laboratory of the School of Environmental Sciences at the National University.
It is not recommended that people with asthma visit the place, informed a report released today by the newspaper Prensa Libre which insists that, among the first signs of poisoning are coughing and eye irritation.
People may be more prone to respiratory problems and there is a relationship between the acidity of the particles and the development of other diseases, said Jorge Herrera, coordinator of the Laboratory of Environmental Analysis.
Meanwhile Juan Robles, director of the National Park, insisted that the visit time to the crater for tourists will be limited and discusses the possibility of using masks to prevent inhalation of these chemicals.