Japanese paint sign help!!

[biskwit09]

We found a rock with japanese paint sign. We cannot read it im hoping someone can help me. This was discovered near a cliff in our farm. Below it is river, some old folks say that theres a cave near the river. And our land was use by japanese camp before Ww2. We also found stuffs belong to japanese. This is the sign.

 

[biskwit09]

And not far from the area while planting crops we encounter cement and underneath is we discovered this items. And the area.

 

[biskwit09]

Hoping someone know the sign. And we are looking for financer.

 

[jeffrey_cueva]

Hoping someone know the sign. And we are looking for financer.

Why do you need someone to finance your project? If there's an entrance to the cave, you only need a flashlight or a stick. Just be careful with booby traps!