Geologic time uses quite a different scale than human time.
Many of the processes in geology take thousands and millions of years to work, such as the formation of a mountain range. For example, the Appalachian Mtns formed around 200 million years ago and were the size of the Himalayan Mtns at the time. Since then the actions of water and wind have worn down the Apps to what they are today. The coastal plane is the remnants of the great mountain range. To grasp the scale of geologic time, use the following as an example.