The boating and swimming area at Cliffside Park was created by a log dam built across Two Lick Creek. The park was a private park that operated in Indiana County during the 1920s and 30s. This particular photo looks like it was taken during the early stages of the log dam construction. The finished dam was several rows high.
The log dam and park are long gone but in this area of Two Lick Creek large stones can be found stretching across the creek.