Half of the ecoregion is closed-canopy tropical broadleaf evergreen forest, with tree heights reaching 50 meters.

[2][3][1] This ecoregion has the largest single fragment of natural forest in Central America, with a size of 14,629 square kilometres (5,648 sq mi).

The ecoregion stretches for 700 km from the valley of Lake Izabal in southeastern Guatemala, across the northern coast of Honduras (in a 50 km wide strip), and down across most of the eastern half of Nicaragua (additionally alongside two minuscule patches in Belize).

[4] Half of the ecoregion is closed-canopy broadleaf evergreen rain forest, but with 30% of the territory converted agriculture.

The ecoregion contains a number of large undisturbed fragments, which is important for larger species of animals.