Sand Gates are portals located at numerous spots throughout the city of Babylon.
There are nine of them, and their purpose was to provide Zurvan with an easy way to travel around the city. When the Prince finds them, he may first kill the Sand Gate Guard and any additional Sand Guards that may be present. After he has taken care of them, he can seal the gate with the Dagger of Time.
When a Sand Gate is sealed, the Prince will then be rewarded with a new ability or Sand Credits. If you miss any of the gates however, the order in which you obtain the rewards is always the same as what's listed below.
It appears that there were more portals than the ones the Prince sealed, as five portals can be seen from the Tower of Babel.
|Sand Gate 1||Fortress||Additional Sand Tank|
|Sand Gate 2||Lower City||100 Sand Credits|
|Sand Gate 3||Upper City Gate||Eye of the Storm Time Power|
|Sand Gate 4||Temple Exterior||Additional Sand Tank|
|Sand Gate 5||Marketplace||150 Sand Credits|
|Sand Gate 6||Upper City||Winds of Sand Time Power|
|Sand Gate 7||City Gardens||Additional Sand Tank|
|Sand Gate 8||Outside the Workshop||200 Sand Credits|
|Sand Gate 9||Hanging Gardens||Sand Storm Time Power|