▁upon ▁withdraw al ▁of ▁the ▁latter ▁during ▁the ▁u pr ising ▁O lig oc ene ▁Mi oc ene , ▁salt ▁water ▁was ▁tra pped ▁in ▁the ▁lowest ▁points ▁of ▁de pression ▁resulting ▁in ▁two ▁grand ▁la kes ; ▁the ▁Et ang ▁Sa um âtre ▁( also ▁called ▁" L ake ▁Az ué i ") ▁in ▁H ait i ▁and ▁Lake ▁En ri qu illo ▁in ▁the ▁Domin ican ▁Republic ▁and ▁a ▁small ▁fresh water ▁p ond ▁called ▁Tr ou ▁Ca ï man , ▁also ▁in ▁H ait i . ▁ ▁The ▁plain ▁has ▁always ▁been ▁a ▁far ming ▁region . ▁In ▁the ▁colonial ▁era , ▁ind igo ▁was ▁cultiv ated ▁there . ▁Over ▁the ▁dec ades , ▁this ▁production ▁lost ▁its ▁momentum , ▁giving ▁way ▁to ▁fields ▁of ▁sugar ▁can e . ▁The ▁Riv ière ▁Bl anche ▁( O uest ), ▁through ▁its ▁ir rig ation ▁system ▁and ▁channel ing ▁of ▁part ▁of ▁its ▁journey ▁to ▁the ▁Canal ▁Bou can br ou , ▁trick les ▁down ▁this ▁vast ▁plain . ▁In ▁its ▁southern ▁part , ▁the ▁P lain ▁of ▁C ul - de - S ac ▁is ▁crossed ▁by ▁the ▁Riv ière ▁Gr ise . ▁ ▁References ▁ ▁External ▁links ▁Pla ine ▁du ▁C ul - de - S ac ▁coordinates ▁ ▁Category : Land forms ▁of ▁H ait i ▁Category : Land forms ▁of ▁the ▁Domin ican ▁Republic ▁Category : P la ins ▁of ▁North ▁America <0x0A> </s> ▁Dou i ▁Th abet ▁is ▁a ▁town ▁and ▁commune ▁in ▁Sa ï da ▁Province