Venezuela lies within the Neotropical realm; large portions of the country were originally covered by moist broadleaf forests. One of 17 megadiverse countries, Venezuela's habitats range from the Andes Mountains in the west to the Amazon Basin rainforest in the south, via extensive "llanos" plains and Caribbean coast in the center and the Orinoco River Delta in the east. They include xeric scrublands in the extreme northwest and coastal mangrove forests in the northeast. Its cloud forests and lowland rainforests are particularly rich.