Video of a visit to Grain Souterrain, showing the reinforced internal structure and the everyday surroundings of the industrial park.
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The video looks like something out of most haunted!
I rather liked your 'Lumiere' videos, eg
stonetapes.blogspot.com/2007/10/lumiere-standing-stone-shetland-13th.html
especially with its surprise ending (I was surprised, anyway).
That Most haunted effect has saved us a lot of bother when we've failed to pack powerful enough torches!