This is from the Temple Institute in Jerusalem in July 2009.

I remember seeing some pictures of them building this Altar.

They may have had it on you tube?

 

4 Aug. 2010 Jean Stepnoski

Dear Bruce and Doves,
      You mentioned the Temple being rebuilt, Bruce. The implements and clothing appear ready and the Levitical priesthood trained. The focal point of the Temple is the altar, of uncut stones, according to the Torah? What if it is initially within a simple prefab cubicle or small structure, before something more permanent is constructed? It might only take a day or two to set up and the Two Witnesses appear within days? This might all transpire within the space of several days. Over months the initial area could be expanded within a far larger permanent structure. Any ideas on these possibilities?
 
With Love and Shalom,
Jean

http://www.templeinstitute.org/archive/30-07-09a.htm