In Los Cayos area, the geochemical information indicates source rock facies occurrence in Early-Middle Eocene age rocks of the Nicaraguan platform. Besides, samples containing oil and gas in Miskito-1 and 2 wells have been recorded. The wells show the presence of a calcareous sequence with the deposition of bioclastic limestones as the main reservoir facies. Additionally, from the seismic point of view deep syncline structures are observed, which may have been buried enough to produce hydrocarbons. Despite its potential these structures have not been drilled.