Perhaps you are preparing to engage in a water-related activity of some kind this holiday weekend: a little frolicsome jet-skiing, some picturesque ocean snorkeling, or just a lazy rowboat ride around the lake.

If you are, mazel tov! But if, like me, you’re poised to stay largely indoors this weekend, deluged with work (always a good problem to have!), planning your wedding, and perhaps freaking out about a possible upcoming house purchase, then you will want to identify some good Labor Day fantasy fun-time water activities that you can enjoy by simply imagining yourself doing them. Right?

I already found my go-to, courtesy of my excellent cousin Geoff, who was in Europe for work a few months ago and sent me this photo, with the included caption:

“Yesterday, I saw the famous river surfers of Munich in action!”

I loved what I saw, but had evidently been living under a rock and was not yet aware of this exotic species. To ensure I would be absorbing only the most objective and rigorously fact-checked information on the topic, I turned to Vice, which explained that the powerful wave in the Eisbach River (a small, man-made arm of the Isar River) where these dudes do their thing is “the result of a rare mistake in German engineering.”

Apparently, a series of concrete blocks was submerged in the Eisbach in the ’70s to slow its flow before it reached the calm canals of Munich’s English Garden, located a ways down the river. An unintended effect of the blocks was the creation of a rapid. That plus some additional manipulation of the area by surfers (in the form of lashing their spare boards to some nearby bridge pylons) worked together to form the Eisbachwelle!, now Germany’s premier surfing wave.

So there we have it: legendary inland surfing (sometimes inland nude surfing, according to Vice) in a country otherwise not well-known for its beaches. What a lovely plot twist!

If that type of unanticipated wonder is possible, maybe I should hold out hope for scoring a little outdoor time (and maybe even some water time?) this Labor Day weekend after all.