Archvale Trout Farm The Archvale Rainbow Trout Farm is located off the Great Western Highway at Marrangaroo, left into Hughes Lane, just before the Mudgee turnoff. NOTICE: NB: Archvale Rainbow Trout Farm is now CLOSED indefinately. The property has been placed on the market , interested parties may contact Brian 0408 650485.. Visit the Archvale Rainbow Trout Farm website