Plain of the Cul-de-Sac (French: Plaine du Cul-de-Sac, also known as the Cul-de-Sac Plain,[1][2] or the Cul-de-Sac Depression[3]) is a fertile lowland on the island of Hispaniola. It extends from southeastern Haiti into the southwestern Dominican Republic, where it is known as the Hoya de Enriquillo.