Dedector, antenna

[Can]

Is there a circuit diagram where we can scan an underground metal such as frequency or ion, for example, an area of 100 meters?

[Carl-NC]

No, and all the devices you see claiming to do this are scams.

[kt315]

just with Holy Mantra from Al Quran book on your lips. but then you do not need any device.

[Skippy]

Other religious scriptures are available, and work equally well.