This undated photo from some time in the 1890s shows a place to sit built into the edge of the park board platform. That seating seems not to have lasted into the 20th century (see images in older posts, below).
Stone construction is hard, heavy work. Probably this was rebuilt because of the basic instability of the site.
This photo is was taken on June 11, 1904, and shows that the Park Board’s viewing platform wasn’t holding up as well as one might hope. This looks like a combination of vandalism and deterioration, with groundwater probably playing a part in the crumbling edge. The land where this platform was looks like this today: