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.
On the border between the Dominican Republic and Haiti, there is an intersection point where two Haitian departments, Centre and Ouest, meet two Dominican provinces, Elias Pina and Independencia, at the summit of a mountain range known as the Sierra de Neiba in the Dominican Republic and the Chaine du Trou de l'Eau in Haiti. This location was previously marked by a communal boundary established in the 19th century.