One structure built by this society includes a circular room and an almost spiral one in an area called the Bailey, which sits on an incline equal to its latitude. Thirteen openings line the courtyard wall of the College of Priests, another of their 
One structure built by this society includes a circular room and an almost spiral one in an area called the Bailey, which sits on an incline equal to its latitude. Thirteen openings line the courtyard wall of the College of Priests, another of their buildings. Triangular holes facilitated airflow in the hollow floors of a twelve-bay building made by this civilization, called either the Great Hall or Great [*] Granary. A trapezoidal dockyard, the world's earliest , served this civilization at Lothal. An advanced water system and rectilinear street grid are found at Mohenjo-Daro, and its other major city was Harappa. For 10 points, name this civilization based near a Pakistani river.
One structure built by this society includes a circular room and an almost spiral one in an area called the Bailey, which sits on an incline equal to its latitude.
Indus Valley Civilization [or IVC; accept "Harappans" until mentioned; accept "Waadi Sindh ki Tahazeeb" from Urdu-speaking archaeologists]