ما هو أقدم سد في الجمهورية اليمنية؟
Recent archaeological findings suggest that simple earth dams and a canal network were constructed as far back as 2000 BC. The Great Dam of Ma'rib dates back to about the 8th century BC and is considered the oldest known dam in the world, being counted as one of the most wonderful feats of engineering in the ancient world.
Great Dam of Ma'rib