“from where you stand, it is 3,958.8 miles to the center of the earth. The furthest mankind has been able to drill down is a measly 7.5 miles. This hole still exists today, close to the Norwegian border; one could visit and drop a coin into its blackness. Of course, if you were to fall into this hole, it would take 215.76 seconds or 3.59 minutes for you to reach its end.”
―
C.S. Fritz,
A Fig For All The Devils