By George Utley, Contributing Reporter
RIO DE JANEIRO, BRAZIL - It was announced on June 11th that the installation of 400 meters of track in the first tunnel to be completed for the new Metrô Linha 4 (Subway Line 4) were laid. It is a major milestone as when completed, the new line will consist of six new underground stations, linking both Gávea and Ipanema in Zona Sul (South Zone) to Barra da Tijuca in Zona Oeste (West Zone,) where the 2016 Olympic and Paralympic Park is located.
The tracks have been laid in the tunnel that links Barra with . . .