Map app is an offline map of the plateau and cave entrances. Fundamentally it is a website, which can be <ahref="/expofiles/mapapp/mapapp.zip">downloaded</a> as a zip file. Once downloaded it can be extracted to some where on your phone.
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Now we need to host the website on your phone, in a way that your browser will trust the website to geolocate you. On android this can be done using HTTP simple server.
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<li>Click on Root folder and point at the directory where you extracted the zip file.</li>
<li>Tick "Redirect to index.html if present"</li>
<li>Tick "Restrict network interfaces", then select untick everything apart from "lo 127.0.0.1"</li>