The force of gravity on Earth attracts things to the centre of the Earth, no? I understand why the gravitational force is less on mountains, as one is farther away from the centre of the Earth, so when using Fg=GMm/d2, then distance is larger, therefore the squared number would be larger than at standard level, and you'd be dividing by a larger number. But why is it that in a valley the gravitational force Earth has on you is still less.. would it not be greater? The distance is smaller, so you'd be dividing by a smaller number when using the formula and Fg will consequently be greater. Am I missing something here or am I totally off track?