Stones

that had to resist a lot of time and damages from nature and others. Also they were the material to use when the wood wasn't enough.
=Stones parragraph=

=== The stones are a natural compound made up of minerals, also called rocks, they are parts of the crust of the Earth. There are different kinds of stones: metamorphic, igneous and sedimentary, but there are other classifications where we can find marble, granite, etc.=== ===The main characteristic of stones is that they are very strong, as consequence they are heavy and hard to manage. This material is less accessible than wood, but when this fiber-material isn't enough to hold weight, the use rocks is inevitable. The final results of building with stones will maintain trough the damages of time, nature and others. So due of their durability, humans has had used the stones for built edifications since the Stone Age like: shelters, houses and religious monuments.===

[[image:https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-snc7/423819_322816874420092_224132780955169_842916_686571105_n.jpg width="252" height="388" align="left"]]
===Trough time we can see how the tecniques of humans to built with stones has evolved. One of the biggest problems of stones is their difficulty to cut them, so the humans started using rubble, ashlar-masonry and mortar; later they invented better materials like metals and the concrete. Those materials could make objects with all the rocks properties, excepting the hard work of give it form. Nowadays we don’t use stones like in the past, all the actual constructions are made of concrete and metal. Those two materials are the evolution of stones, but maybe in a near future there will be another material that could name a new Era.===

Stones Recording: media type="file" key="Stones recording.wma" width="467" height="57"