It reminds me a little of the signs that began to show up more and more in the wake of superridiculous lawsuits, possibly in the 1990s. Signs like, "If you climb on this wall and fall, we cannot be held responsible" or "If you ski off-trail, you may encounter any of the following: trees, wildlife, rocks, ice ... ." Signs like that.
From the website of Ten Thousand Waves (apparently more commercialized than it was at the outset), in reference to its communal bath.
If you are sensitive to nudity, we strongly suggest trying a private bath instead.
|Miles beyond the communal bath, in Yufuin|
[photo from TTW tours archive]