On the border of the Dominican Republic and Haiti, there is a binational quadripoint where two departments of Haiti, Centre and Ouest, meet two provinces of the Dominican Republic, Elias Pina and Independencia, at the ridgeline of a feature that is called the Sierra de Neiba in the Dominican Republic and the Chaine du Trou de l'Eau in Haiti, and which a 19th-century communal boundary followed before the intersecting 20th-century international boundary was created.
At the border between the Dominican Republic and Haiti, there is a meeting point where two Haitian departments, Centre and Ouest, converge with two Dominican provinces, Elias Pina and Independencia, at the crest of a mountain range called the Sierra de Neiba in the Dominican Republic and the Chaine du Trou de l'Eau in Haiti. This location was previously defined by a communal boundary established in the 19th century, but was later replaced by the modern international border.