Pico de Zarza is the highest point of Fuerteventura, just over 800 meters high (just now I found a figure of 807, but it seems to me that I saw some other heights somewhere). When the sky is clear you can see all of Fuerteventura, Gran Canaria and Teide on Tenerife from there. The sky wasn't that clear when we went, so we didn't see the other islands. Still, the views are spectacular and the walk well worth doing.
Above is the view along the wild Cofete beach (btw, the only remaining point of the island that I really want to visit and haven't visited yet).
In the beginning of the path there was a sign saying "Pico de Zarza, 3 hours 20 mins". I am still not sure what that meant - it is too long for one-way, too short for two-way time. We were the three fit women, walking not that fast but without long stops, except on the top. It took us two hours to go up and one hour and a half to get down.
View along Barranco de Vinamar towards Playa del Matorral in Morro Jable. You can see the lighthouse to the right. The path is very visible on the left. The light green plants are euphorbias (tabaibas), the ones that look like small trees. The dark green clusters at the bottom of the picture are also euphorbias, but these look like cacti. I think those are Euphorbia handiensis, endemic to Jandia peninsula on Fuerteventura.
One more photo of the long sweep of Cofete. You can see how steep the "other" side of the mountain range is. There is an expression in Russian, coming I think from one of the humorists of former Soviet Union: "скорую помощь не тревожь" - "don't bother the ambulance". It's one of those setups, so watch your steps and don't take the pictures on the go.
Asteriscus sericeus, the Fuerteventura endemics. There was an area fenced around he peak itself - I assume to protect the flora from the ever-present goats. Walkers can go in through the gate, which you are politely asked to close behind you.
View towards Playa de Barlovento.
View Morro Jable - Pico de Zarza in a larger map
Zarza pics on shutterstock