The Mundo Perdido is a top track of almost 12 km, all single track, this is a route with a clear all mountain feeling, the feeling is there all way. The route reaches a 60% of single track, which means there is a bit of everything, out of it there are 3,300 m. which are optional, because the track goes to the beautiful village of Vallibona and returns, it is advisable to visit it, but it is optional.
All the topo tracks included in this route have a level of difficulty of 3, therefore the route has this level, but we should bear in mind that there are many hours of single track, not difficult but constant, it is not easy. In the second part there are not many opportunities to get water and it is not always sure. Therefore, if you plan to reach Vallibona you should take water there, otherwise you'll have to carry enough water from Morella to finish this technical all mountain route which becomes longer than the technical data suggest.