Olimpia Eissport Zentrum, Garmisch, about ten years ago. Source.
Riessersee host the Passau Black Hawks. Passau wear black, red and white like their Chicago role models.
EHF Passau Black Hawks came to be in 1997. The team was promoted to the Oberliga in 2007, but in 2012 dropped down to tier VI and only got back up in 2020. Last year they finished 12th out of 13.
Passau is the place where the Danube passes out of Germany and into Austria, though that probably is not the accepted etymology of the name.
Passau is also the name of a hockey goalie equipment manufacturer based in Chambly, Quebec. Did the owner once play goal for this club?
European hockey is full of clubs that use Indigenous names and imagery, no doubt because it seems North American to them. But North American sports teams are getting rid of their culturally appropriated branding fast. The CBC has started to refer to the Blackhawks as "the NHL's Chicago team" (example), so you can see that the days are numbered for that trademark. Passau Black Hawks and Frölunda Indians are going to have to think about this soon.
Passau has a loan agreement with EV Landshut of DEL 2 which affords members of Landshut's development squad game time with the Oberliga team. There are ten Landshut U-20 players in Passau's 34-man roster. Riessersee has a similar arrangement with Red Bull München.
Games so far this season:
2021/10/31 Riessersee 3 - 4 Passau
2021/12/5 Passau 1 - 6 Riessersee
2022/1/7 Passau 2 - 1 Riessersee
(Both of their opponents were down with Covid January 7th so they played each other, moving forward a game originally scheduled for late February.)
[But now Passau has Covid and this game is postponed to February 25th.]