 However, researchers predict that it extended as far as the Iroquois settlement.Although The Iroquois Causeway has not been followed in its totality, it may be presumed that it is of a comparable length to The Pocora Causeway, based on their similarity in design.The Pocora Causeway begins in the main complex and extends for an indefinite distance, going beyond the zone southeast of the complex, where it was not possible to clear vegetation during the 2005 field season.