## 3 Results
### An Example: AR Application of the Archaeological Site \"La Matilla\"  
We are developing an AR application for the dissemination of cultural heritage in a particular case in which the site is no longer accessible. Specifically, the application is intended for the visualization of some archaeological remains of Roman buildings and ovens that were found by chance during refurbishment works of the road EX-360, near the town of Fuente del Maestre (Badajoz, Spain), at the place known as \"La Matilla\". Some photos of the site can be seen in Figure 5. After analysing the findings, evaluating their historical value, and calculating the increase in time and cost that their conservation would entail for the road works, the authorities decided to cover them once digitized. This would at least provide the raw material to generate tools that allow people to visualize these remains later on, when already hidden, either by physical reproduction or by representation through digital technologies: screens, VR, or AR devices. Up to now, we have developed a proof of concept of an AR application to enable the visualization of the site with a mobile phone. When we decided to design this AR application for the remains found, we took into account that although Fuente del Maestre (Badajoz) is a little town of less than 7000 inhabitants it has a very important cultural heritage. Its archaeological, historical, and monumental wealth led the Government of Extremadura to declare it an \"asset of cultural interest with a historical set category\" (Decree 136/1998 of 17 November). Due to this, we had at our disposal very interesting bibliography, news, and documents on the surroundings to fulfil points 2 and 3 of the decalogue. Obviously, the data acquisition of the remains and its historical and archaeological study (point 1 of the decalogue) was made before this AR application were conceived. Concerning the point 5, the local authorities showed interest in the project and will study the budget of the initiative once this AR application became a reality. Besides, this town is home to two of the most important export companies in Spain, which employ a significant number of people and are a focus of attraction for many sales agents, workers, businessmen, politicians, etc. The implication of these private firms will be the next step. All these advantages motivated us to undertake the design of the AR application thanks to the funding provided by the research projects in which we participate, which for now complies with the point 4 of the decalogue in this phase of \"development\" we are in. In our application, technology becomes the only means to make accessible the remains that had to be buried. On the one hand, AR allows researchers to analyse this type of historical construction and, on the other hand, it gives the general public the opportunity to know and explore, above ground level, remains that are buried at a certain depth beneath their feet. This application will undoubtedly be a tool that will allow both target audiences to enjoy the building and learn about these characteristic remains (point 6 of the decalogue). The idea is to install a fixed stand, suitably signposted, in the area where the buried remains are located. This signage would consist of a poster that would include an explanation of the process of downloading and installing the app, a user manual, and information with summary photographs of the site for users who prefer not to install the application. Fortunately, currently, mobile internet networks have improved considerably in terms of both coverage and speed. Specifically, it has been verified that in the area where the buried archaeological site is located, internet connectivity is available (point 7 of the decalogue). Our application is intended to be always free of charge. As mentioned above, these remains are located in a region rich in heritage and which has strong support from the authorities to promote initiatives that study, protect, and disseminate historical heritage.