The Tunnel is 1217feet in length and is lined with 200,000 glazed white tiles.
The shafts at each end are 44 feet deep at the Isle of Dogs and 50 feet at Greenwich.
The Tunnel is 33 feet underwater at low tide and 53 feet under at high tide.
In the both entrances, that are a circular buildings with a distinctive glass domed roof, they have a lift or steeps to access at the Tunnel strictly so considered, it’s 9 feet of diameter and you can’t see the opposite side because it isn’t even, the tunnel have 3 different parts; descent, even and rise. It’s open 24 hours a day, although the lifts don’t always run the full time.
The north shaft was destroyed during the Luftwaffe bombings of London in the World War II, and the Tunnel was out of order for a few days.
The Tunnel replaced the old ferry that had been running since 1676, at the beginning, this tunnel was used by sailors and stevedores of London docks and warehouses in order to go or return since the south neighbourhoods to the ships and the other wharf dependences when it was one of the largest harbours in the world, but nowadays the old docks are practically a remembrance of the past and in this place lift up one of the most smart residential and business areas of the british capital. The Woolwich Foot Tunnel, situated about 3 miles downstream and opened 10 years later, is very similar.
Finally, a curiosity: If you go down in the middle of the night, and stand in the exact centre of the tunnel, marked by a vertical seam of tiling in the wall, when it’s completely empty, if you speak or whistle or make a noise, an echo comes back from both ends a whole second and a quarter later.
