The reason for the planned abandonment of the Achaemenid era city (553 BCE-330 BCE) of Dahaneh Gholaman is still a mystery to archaeologists, even after more than 40 years of research on the site. Located in Iran’s southeastern province of Sistan-o-Baluchestan, the ancient city was identified by Italian archaeologists in 1960. A group of major monuments and some individual buildings were discovered at the site, which covers an area of 120,000 square meters.
     The studies in the 1960s indicated that the residents abandoned the city about 200 years after it was founded and may have relocated to present-day Pakistan. "The evidence shows that the people abandoned the city methodically in a calm manner and that there were no factors like war, fire, or an outbreak of a dangerous contagious disease behind the migration. The people eventually reached a consensus to evacuate the city without leaving any trace," said Mansur Sajjadi, the director of the Iranian archaeological team working in the region.
     However, archaeologists have surmised that the city was abandoned due to an important political decision, a strong sandstorm, or because the river which supplied water for the inhabitants ran dry. According to the team’s studies, there was no important political decision for the migration, said Sajjadi, pointing out that only 150 to 200 years passed from its construction to its evacuation, and thus it seems strange that a political decision would have been behind the relocation. "The second proposition is also not likely, because sandstorms were ordinary occurrences at that time. Moreover, the people had enough time to evacuate the city and transfer their property," he noted, saying that a storm forcing the people to abandon their homes would have inflicted heavy casualties and burdensome financial losses, but no evidence has been found proving this second possibility.
     According to Sajjadi, the best hypothesis to explain the sudden migration is that the river ran dry. "It is likely that one of the branches that supplied water to the city, ran dry for some reason, and thus the people had to leave the city, but this is not certain," he said. The team of archaeologists is still trying to determine why the people abandoned the city in such a planned and precise way.

Source: MehrNews.com (4 February 2005)