Explanations needed

last Saturday GrrlScientist and I went for a walk in Oberursel. It’s a pretty town, but down a back street we found this tree:
Upon this tree was a sign:
This was rather puzzling. What were a wheel-y thing and a shrimp doing at the foot of the tree? Rather than try to work it out ourselves, I though I’d crowd-source it, and ask you, my reader(s) to explain what this is all about.
I’ll probably deduct points for the right answer, unless it’s particularly good. I’ll definitely deduct points for spam. Well, unless it’s shrimp spam.

About rpg

Scientist, poet, gadfly
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10 Responses to Explanations needed

  1. Mike Fowler says:

    Want to grow your carapace by 4–6 segments? Visit http://www.homeobox.com* to access the secret to discount extensions!
    *Don’t really.

  2. Bob O'Hara says:

     Oh damn, that site is currently "under construction".
    BTW, I’m becoming more convinced that the shrimp in the aquarium next to me spend their time pretending to play Chopin piano pieces.

  3. Mark Brewer says:

    The answer may be at
    although my German isn’t good enough to be sure…

  4. Bob O'Hara says:

    That doesn’t explain the shrimp, though. Or why the mills are at the bottom of a tree.

  5. Cath Ennis says:

    It looks like one of those rebus puzzle thingies.
    Hmm, let’s see: wheel river prawn roots
    wheel = well = good?
    root = route?
    This way for high quality streaming porn?

  6. Cath Ennis says:

    p.s. my apologies in advance for any dodgy keyword searches coming your way

  7. Bob O'Hara says:

    Hmm, I wonder if that’s why Grrl wants to go back.

  8. Kevin McConway says:

    It’s not a shrimp, it’s an amphipod, Bachflohkrebs, Gammarus pulex. http://www.frankfurt.de/sixcms/detail.php?id=3060&_ffmpar%5B_id_inhalt%5D=42159
    But why under the tree?

  9. Mark Brewer says:

    I once got lost in Barcelona airport because of a "down arrow"; it meant "Go up the escalator which begins on the floor down here", not "Go down the passageway underneath the escalator", which my UK-centric interpretation of arrow signs had suggested.
    So I don’t think the "down arrow" means "under the tree", I think it just means "straight ahead".
    Hmm…that was a dull answer, wasn’t it?

  10. Hannes Müller Schmied says:

    Hey Bob,
    just turned in… Nice answers, and the way was given by Mark. The sign is for the "Mühlenwanderweg" and in fact, there has been 42 mills at the Urselbach in former times for different purposes. Each sign should represent a former location. In some areas (as here), the Urselbach flows now subsurface and the former location of a mill is signed by an arrow…
    1 secret less I think 😉

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