Bölle

We were on out way to an invitation in a Restaurant to celebrate M.s birthday. When we came out of the forest, we had to stop at the traffic light (Time enough to grab a quick blip) at the Bölle. Bölle is the nickname of the Böllenfalltor near the football stadium. And what's a "Böllenfalltor"? 
"Böllen" is the south hessian name for poplars, which were there ages ago.
And a "Falltor" is a special gate that closes automatically after a passerby walked through. This prevents the game from escaping from the fenced area.
(Something for the section useless knowledge, found here) :-D