 Complete the following phrase:  The park was initially added as a World Heritage Site due to the diversity of plant life present around the Comoé River, including pristine patches of tropical rain forest that are usually only found further south. As a well-eroded plain between two large rivers, the land in the area is home to relatively infertile soils and a moisture regime suitable to a richer biodiversity than surrounding areas. In 2003 it was added to the list of World Heritage Sites in Danger due to poaching, absence of management, overgrazing of the park by cattle, problems that intensified after the outbreak of the 