Anyone know what these are?

[Nickyboy]

http://maps.google.co.uk/maps?hl=en&ie=UTF8&am...

Was driving up the A5 last weekend and there is 2 of them, from above they seem to be hollow. Anyone know what they were used for?

Actually, zooming out they appear to follow the line of the railway so i'm guessing at steam vents or similar?

Edited by Nickyboy on Friday 5th November 00:10

[Slinky]

Either sam vents for a rail tunnel, or just water storage..

[mybrainhurts]

It's a Victorian cheese mine...

[Parrot of Doom]

Railway tunnel ventilation shafts.

[Kit80]

That's my house

[Pesty]

Its a launch tube for the trident replacement

[FranKinFezza]

Rail tunnel vents zoom out on the map and you can see several of them of differing sizes
and you can see the tunnel entry's and follow the line of the tunnel in the surface topography.