This post is in response to the question, “Can I ask please about the signs or symbols of water traps?” When it comes to water trap danger signs, the Japanese Imperial Army rarely used them. Maybe it is already common sense for everyone to be cautious about water traps when working on sites near water sources such as river, lake, ponds, or creeks.
Anyway, based on what I observed, the Japanese Imperial Army preferred to use danger signs that are not specific but signs that gives general warnings. Thus, danger signs like these do not give you any idea about what type of trap to expect ahead in your diggings.
But basing on my personal experience as a treasure hunter, here are a few of the danger signs that we encountered and warned us about presence of water traps.