The area where you feel the burning sensation is in the ball of the foot â medically referred to as the forefoot â under the top or heads of the metatarsal bones, the five long bones in the feet that connect to the toe bones.
Glaciers erode the land in two ways, by plucking and abrasion. Plucking is the process when a glacier picks up rocks. The weight of a glacier makes it easy to break rocks and boulders in pieces.
Marine erosion processes attack the foot of the cliff and cause the erosion at a wave cut notch. Waves can pound this area causing fragments to break off, and the water can also trap air in pore spaces, faults and crevices, compressing the air which in turn exerts pressure on the rock causing it to break off.