7 inches would have little if any meaning to the Japanese so you are drawing a correlation that likely doesn't exist. The Japanese adopted the Metric system in the 1800's and continued to use their traditional Skaku Kan system of measurement along side it.
There is property on the map with a different owner. Someone recently purchased some of the land to the southwest. The entire area I have been searching there is 14 hectares that are subdivided between siblings of the same family. A lot of it is not included in that map. The whole area is in this next image outlined in red. The portion sold is blacked out.
The old timers in that area had a lot of interesting stories from the occupation. It was extremely remote and difficult to reach at that time. The Japanese enslaved the local population, forcing all the men to dig empty holes. When they refused they were beaten with shovels. But no Filipino ever saw any treasure and lived to tell the tale. The women and young girls of the area were getting kidnapped and forced to be sex slaves. Finally some of the Filipino men decided to group up and try to fight back but it didn't work out well for them. A lot of innocent people died here. Dragonasia's biggest gold hit is not far from a cave entrance, now collapsed and filled in. All the locals believed that there was a group of some kind of vicious immortal dogs chained up in there which up until fairly recently kept any of them from entering the cave. A story told to them by the Japanese. In the 70s a group of Japanese tourists came here "searching for rare butterflies". They were spotted using a compass to survey the area. And later were spotted with their pant legs covered in mud before vanishing completely.
You see the photo on the right move the blue square over to the left. Kinda looks like a rock there in the hole. I saw something really don't think it was much. After thinking about it I just wonder if they salted the hole with some flour gold as a decoy. Animals will move away from their nest a bit as a decoy, so maybe it is somewhere very near there, I don't know.
Hm, ok. Maybe I'm off center. I'll go there with my pulse-induction detector in 2-3 days and will scan all the sides of the hole. If I'm up to 4 ft off center I should be able to pick up the object. Thanks for taking a look.
That's an understandable conclusion and you may be right. But from what I've learned, they did sometimes utilize english units for the measurement of their markers. Maybe because it was possible to use the number seven and still have a marker that was of noticeable size or what, I can't say for sure. I have learned from more than one source that both units of measurement were utilized in the burials. But again, who really knows. You could be right.
I don't mean that close, maybe within 1km or so. My underdstanding most Japanese caches were very deep so metal detector might not reach that far, I just don't know. For sure check the area.
The angle of that photo of the cemented hole is not good. Needs to be more vertical. Yeah, five map dowsers you can expect five different locations. Or they give you the shotgun pattern. Don't put much faith in any of it. A dowser will pick up your intentions. "That's right where I thought it should be." is a common reply after a dowse. Two hits in the same area still doesn't mean much. On-site dowsing is going to be much more accurate. That said, the cemented hole must be there for some reason to keep people out. If you get a metal detector hit you might consider digging along side of the concrete, a lot easier digging. But be careful of any excavations. Typically the walls should be a t a 45 degree angle for most soil to aviod cave-ins or use some shoring. Then there is the possibility of noxious fumes accumulating in the hole. Need good ventilation. I know a guy who was standing in a four-foot -deep ditch and one wall caved in on him. He was permanantly disabled. As for booby traps, I've heard there can be cyanide fumes around some gold. Don't even handle it with your bare hands.
