Subterranean Urban Exploration - Niagara's Confluence tailrace tunnel

The internet is a great place for getting side-tracked.

In a search for diy materials to refurbish my hi-fi speaker covers (i.e. "steel" "mesh") Google provided me with an exciting, fascinating, dangerous and spectacular tale of Urban Exploration.

Three blokes breaking into a disused hydro-electric power station under cover of darkness at Niagara falls, to explore the Confluence tailrace tunnel that leads out behind the waterfall.

Intrepid Subterranean Urban Explorers, or Thrill Seeking Nutters with no regard to their own, or others, safety? - you decide.