[RWD version 1 ] This is a very varied walk that starts from the north eastern coast of Fuerteventura, near Casas del Jablito. It can be started and finished at bus stops on the Tiadhe route 106. The start and end are interchangeable as the route could be done either way, however this description is for the south to north direction.
Start from the northern bus stop at Parque Hollandes. Conveniently this has a cafe should you want it. Head to the coast using the unfinished dual carriageway. A rough track emerges north through the badlands.
A short digression about badlands or malpais as they are described in Spanish. This is land covered with a lava flow which is difficult to cross when in its native form. However three things make for routes across it: 4X4 tracks, barrancos (streambeds, usually dry) and abandoned developments, plentiful in this part of Spain. We will use all three in this walk.
Having walked along the coast, head NW along an abandoned road to the main road (FV-1A aka FV 104), cross this and then go to a barranco heading NW under the steep slope of Roja.
Follow the barranco into increasingly barren isolated land without paths and when the slopes are easier head north to get to the southern arm of the broken caldera. The terrain is rough and made slippery by a covering of small volcanic stones. Boots and poles very useful here.
Reaching the summit is straightforward as is the walk around the caldera to its northern arm for the descent. The views from this coastal summit are superb: along the coast and to Lanzarote.
Descend along the visible paths towards the dunes of the natural park. There is a convenient set of tunnels under the road which you can walk through incidentally.
Proceed north along the beach with an optional dip where there is beach. Finish at the bus stop near the two large hotels (such as Hotel Riu). There is a supermercado near this while you wait for a bus.