I have no idea.
I always assumed that a sinkhole saves a whole lot of excavating and is the right shape. Never thought about shielding or Telluric currents.
Hmmm....
Space/Science » in reply to Yo, Pod
I always assumed that a sinkhole saves a whole lot of excavating and is the right shape. Never thought about shielding or Telluric currents.
Hmmm....