1. Welcome to 28DaysLater.co.uk - 28DL - The UK Urban Exploring / Urban Exploration / Urbex Forums.

    Asylums and Hospitals, High Stuff, Industrial, Leisure Sites, Residential Sites, Military Sites, Mines and Quarries, ROC Posts, Theatres and Cinemas, Draining, Underground Sites, European and International Sites, Leads, Rumours and News, Kit, Clothing, Equipment, Photography and Video sections plus a lot more.

    Please feel free to browse this website as a guest. Creating an account removes some ads, allows you to post replies, start new topics and threads, and gives you access to more features including bookmarking, live chat, messaging and notification systems.

    Create an account | Login | Request new password

Report - Excelsior Tunnel, Cornwall, Feb 2011

Discussion in 'Underground Sites' started by Incognito, Feb 7, 2011.

  1. Incognito

    Incognito Just Reckless.
    Regular User

    Joined:
    Aug 8, 2010
    Messages:
    75
    Likes Received:
    7
    Been done a few times already, still a great explore and we managed to lose a few hours in here.

    The Excelsior Mine was a small affair that worked between 1873 and 1884 on far older workings and produced only 5 tons of tin ore.

    The Excelsior Tunnel however was driven south-westward towards the North Engine Shaft of Kit Hill Mine looking to to connect to this 660 feet below shaft collar and form the main drainage level and tap into the rich lodes of tin and copper of that mine.

    Driving of the tunnel started in 1877 and continued on and off over the next 60 years until 1938 when it was finally given up, still about 310mts short of its objective after hitting the very hard granites of the base seams of the working. It is however almost 1km in length and dead straight and it is possible to see the only entrance from the far end of the tunnel.

    In 1959 it was the centre of project Military Atomic Energy Authority operation orpheus investigating the possibility of masking the seismic signal given out by underground nuclear tests.

    The tunnel has a lot of water in sections but its accessible with wellies (just).

    1)
    [​IMG]
    2)
    [​IMG]
    3)
    [​IMG]
    4)
    [​IMG]
    5)
    [​IMG]
    6)
    [​IMG]
    7)
    [​IMG]
    8)
    [​IMG]
    9)
    [​IMG]
    10)
    [​IMG]
    11)
    [​IMG]
    12)
    [​IMG]
    13)
    [​IMG]
    14)
    [​IMG]
    15)
    [​IMG]
     

    Remove this ad by donating or subscribing.

Draft saved Draft deleted
Loading...

Users Who Have Read This Thread (Total: 0)

Share This Page

Remove this ad by creating an account and logging in