View of the ventilation shaft bored vertically through the roof the tunnel 25C. The OHE conductor can be seen as well as well as the grill on the mouth of the shaft some sixty feet above, the diameter of the shaft would be about 4 feet. (Pic may be deleted from the IRFCA server due to poor quality). Inside tunnel 25C of the Bhore ghats, 2004-02-14. By Apurva (iti@vsnl.com).