Sunday, June 6th, 2010, members of the Beckwourth Outdoors walked the plank high Clear Creek in Clear Creek Canyon, west of Golden, Colorado. The 4-5 mile hike included walking the boardwalk like plank built above the abandoned water aqueduct built by the Golden Canal and Reservoir Company in 1932. I do not know not when the aqueduct was abandoned and who built the plank walk above the water channel, however it was an interesting feat to position beams across the aqueduct to support the planks.
There are two separate impulsive profane words expressed in the video used in context to highlight the insane dangerous nature of the plank walk.