The old boating lake is the home to dozens of ducks, swans and coots so be careful not to disturb them.
The lake used to have a bridge across the middle of it where popular boat races were common in the 1970's. The bridge was knocked down after boat races became less popular.
The ducks will appreciate it if you gave them some food, if you don't feed them then they will probably quack very loudly and try to distract you from finding the cache.