The legend of the heroic giant Mahan, standing 22 feet tall and in his mouth 64 teeth, dates back to pre-Hispanic times. He died fighting the Norman conquerors and was buried up on Cardon Mountain Natural Monument in Fuerteventura.
The indigenous people believed that mountains were a link between sky and heaven and earth, Montaña Cardón rises 2,263 feet and looks like it has been cut with a knife, the effects of erosion over millions of years. Up the mountain there is a neatly carved trail leading to a hermitage cave chapel, El Tanquito.
To get to the church the hike is 2.5 miles, so roundtrip there will be a 5 mile trek up the side of the mountain. 
Trailhead parking is on the road FV-618 near the greenhouses, you can use the GoogleMaps location: Parking Montana Cardon, 35628, Las Palmas, Spain.
For the most part, you will find that the path is very well maintained up to the church.
So much so that on the first Sunday of May till this day pilgrims of Cardon take the trail up to the church singing and dancing, with food and images of the Virgen del Tanquito! 
But after a point where there is a bulge in the trail with a large stake, it begins to narrow, steepen, and become more slippery. However, the view opens up on the northern side of the mountain and stretch all the way out to the Jandia Peninsula, to Cofete Beach.
When you reach the gate, be sure to close it behind you so that goats do not come into the area, you are almost to the church.
An endangered female Canary Islands stonechat, found solely on the island of Fuerteventura, was perched on the fence.
Now, the trail levels out and a fence defends from the steep precipitous right beside you.
It is strange that I was so shocked to see this pool of water, but with the element so scarce I realized that it was the first time I had seen a natural spring during my time in the desert islands.
With this knowledge, you can see why this area is such a sacred place. A small rock façade and a simple door, with just a rock at its base to lock it, beckon your for a closer look.
Inside a tiny place of worship is dug into the side of the mountain, adorned with figures, candles, and other offerings of faith.
So simple and unexpected in this natural setting, with no one around along the whole hike – yet candles were mysteriously aflame. A note asks hikers to water the plants and leave the date they were there! Beside the chapel, there is a wet cave boring deeper into the mountainside.
Additionally there is an oven, perhaps for the pilgrims to barbecue with after their hike.
From here, it is possible to continue to the top of the mountain, though the trail looks extremely eroded – and so steep to a point that I was even uncomfortable with. Let me know how it is if you journey on.