Or, it could be just all in our imaginations...
YES! YES! YES! There really is a mysterous echo--eek! 
I did it, when I was living up the road in Lake George. When I lived there, last summer, for cheap pleasure (aka: free), I used to walk that board walk, sit in the gardens, window shop, watch the boats and tourons..erm nice tourists, and, yes, check out the "echo" spot. Yes, I truly am dull. I kept wanting to do a Father Ted, and boast about the big "tourist attraction." 
