Thanks to higher conductivity of electricity near various engineering networks or near various archaeological structures, including those from ww2 - airplanes, bombs and many others.
Shukrani kwa conductivity ya juu ya umeme karibu na mitandao mbalimbali uhandisi au karibu na miundo mbalimbali ya akiolojia, ikiwa ni pamoja na wale wa kutoka ww2 - ndege, mabomu na wengine wengi.