Mystery photo, What’s happening here?

The image above is one of 21 glass plate negatives found above Miller’s Drug Store in Margaretville years ago and donated to the Historical Society of Middletown by Al and Naomi Weiss. Several of the negatives were scanned and restored by Ed Kirstein of Roxbury. They were printed and framed by the Historical Society in 2007, and can currently be seen at Fairview Library’s conference room where the Historical Society will mount rotating historical displays.

What do you think is happening in this photo? What covered bridge is that in the background?

“Coming out of the ball smiling,” — is this the same event?

Is this postcard image, provided by Lynda Stratton, the same event? Is the clothing of the same era? Perhaps a daredevil sailed down the river in a flexible ball of some sort? Maybe the retaining wall at right (upon which the photographer must have been perched) offers a clue as to the location.