Estero Marga Marga is small natural watercourse in Valparaíso Region, Chile. Estero Marga Marga is known for being an important site of Spanish gold mining in the 16th century.[1] The invasive plant species Limnobium laevigatum is present in the watercourse.[2]
Estero Marga Marga is underlain by a blind fault.[3]