Uploaded on 2014-10-21 by JGuerreroN

![enter image description here][1] [1]: https://edxuploads.s3.amazonaws.com/14139011258528472.jpg These is a view from the Calle-Calle bridge of Valdivia. In this photograph the invisible that I can identify are, the use of the river, either for commercial or tourist reasons. Another invisible information is the grown speed of city. Take the example of the use of river. In this city are planned to use the river for transport people, we can use these information to know who, and how many people use this kind of transport and then to plan if is possible to development of city near the river for example.