The mangroves of The Mouthpiece, located in the swamp The virgin, close to Cartagena, it is a water route traced by the Spanish in the seventeenth century. There we can find a great biodiversity and natural wealth that makes this place a truly unique and privileged place worldwide. Thus, it is a cultural activity that is very well received by students from Nueva Lengua Cartagena, and where they can enjoy an ecosystem that can hardly be found anywhere else on the planet.