What is a saddle a ridge a cliff a round hill spur and a river valley in geography Also where can i get topo maps of these things?

Cliff ­- Marked by a sudden drop in height on a contour map Spur

• A protrusion from a cliff. It is shown by an area of high land

continuing out from a cliff while its surrounds are nearer ground level.

Ridge - Shown by continuous elevation for some distance.

Saddle ­- Appearing a lot like a saddle from a side view, it is the area between two hills. Valley ­- A depression in the ground, similar to a hill, but instead the area surrounding the valley is higher.