An expedition to the 'dead zone' just north of Virar (kilometre 63 from Mumbai) where the Mumbai area 1.5kV DC traction gives way to the 25kV AC traction beyond. (L to R) IRFCA members Shrinivas Joshi, Viraf Mulla, Rajan Mathew, and R Venkatesh. Photo by Apurva Bahadur, 1st May 2001.