What will be the gravity if we dig a hole in earth?

BG Best to know when you walk between to mountains you have the pull of
gravity on each side of you. Thus gravity is a particle attraction.
Thus at the Earth gravitational center gravity is equal in every
direction,and its force on you would be zero. You would float(like free
fall) Still your mass inertia would stay the same. A mach theory would
help you explain other effects you would still have. TreBert