A vale is a long depression in the land, usually between two hills and containing a river. A vale is a valley.
If you've ever gone to a place where there are mountains, you've seen plenty of mountain ranges, mountaintops, and valleys. Valleys are the low points between hills, and they are also known as vales. A vale often contains a river, because it's the lowest point and therefore somewhere water can settle and flow. If you climb a mountain, you'll see many vales, which are often long and winding. The hills and vales of an area are usually gorgeous and breathtaking.