Off in the foggy distance, PPL Park starts to emerge as volunteers continue with their early morning prep.

Eric Shertz helps organize the opening day snake Tifo in the River End.

One of the many volunteers helps load all the flags and Tifo into the River End.

The Philadelphia Union announced on Tuesday that its home opener will take place at PPL Park on Sunday, March 18.

The time and opponent will be announced at a later date.

The 2012 MLS season will officially commence on the weekend of March 10. Six games will take place on Saturday, March 10 at Colorado Rapids, D.