(This is not often seen in other regions except for the Tango region) It is said that such a signboard is set not only to warn people in order to preserve plants, but also to serve as a warning against the danger of being bitten by Japanese copperheads in forests while seeking Hedara.
（丹後地方以外ではあまり見られない）これは植物保護の観点からの注意でもあるがヘダラを取りに林へ入ると、ニホンマムシに噛まれるといった危険もあるため、このような看板があるそうである。