Thanks to Charl M. du T. for e-mailing me a link to an article in the Missoulian newspaper, plus links to photographs and a video clip.
Back in April, US canoeist Tyler Bradt set a new world record by kayaking over the 186-foot Palouse Falls in Washington state.
It took him almost four seconds to fall from the lip to the base of the falls, and a further seven or eight seconds to fight his way through the roiling water at the base and emerge into clear water beyond.
Here's a short video clip of his preparations, and making the run. I recommend watching it in full screen mode, to get some feel for the scale of the challenge.
Congratulations to Mr. Bradt - and no, I don't think I'll try that myself! You can hear an extended interview with him here.