Another micro park in the City of Decatur, this spot used to be a wide intersection with a gentle curve off a busy street into a quiet residential neighborhood. Drivers zooming north on the busy street would readily use this as a cut through. Then the City put in temporary barricades to make the right turn for northbound travelers to be a 90 degree turn, not a swooping higher speed turn. This worked so well in slowing them down that the City then filled in the triangle with soil, put out some plantings and a park bench, and paved a small bike path through there about where the swooping fast right turn used to be. So that's the history of this innocuous little triangle. When you visit, be thankful it is so peaceful now, and know why it's there.
This is a good geocache for beginners, illustrating a common type you will run into many times as you go along. It is tiny, no bigger than the finger tip of your little finger. BYOP. Tweezers can be handy for extracting the log from nano's.
And, do sign the log if you want credit for the find, or provide a photo of the cache in your hand.