The Temple Institute: In-Depth Temple Study: The Shushan Gate
 
The Shushan Gate: Uses

When a red heifer was slaughtered and prepared, the priest and those that accompanied him led the red heifer out through this gate, and across a special bridge, to the Mount of Olives. On Yom Kippur an individual was appointed to exit through this gate with the scapegoat that was cast away in the wilderness as an atonement. 
Contents:   Part I,    Part II,    Part III,    Part IV,    Part V,    Part VI,    Part VII