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Old 15th Apr 2019, 11:06
  #134 (permalink)  
Resident insomniac
Join Date: Aug 2005
Location: N54 58 34 W02 01 21
Age: 74
Posts: 1,859
I recently visited a 'heritage' site (Beamish Museum) and entered the drift mine.
Hard hats were issued to all visitors (to the mine) and I soon discovered why.
I am not tall, but nevertheless it wasn't long before my hat was striking the roof (even though I was stooping to avoid the obvious lack of clearance) - sometimes with enough impact to arrest my progress.
Apparently the height of the passageways was determined by the height of the ponies that pulled the trucks.
G-CPTN is online now