It passes through the middle of Saltfleet where you can go to see sand dunes.

Like a continent in miniature, Gran Canaria is an island of sandy beaches, parched deserts, green valleys and soaring peaks, with diversions such as mountain hiking, seeing prehistoric mummies and scaling momentous sand dunes.

As nuyum writes, if you are looking to see sand dunes, you must go beyond Zagora, nearest is Tinfou dunes and it is about 20 km after...

Minutes later they could see man-high sand dunes through the thinning trees.

By now the sun had glided to an angle at which they could see low sand dunes and ripples, even the infrequent outcrops of sharp stone, by noting their shadows, not the stone or the dune itself.

We see enormous sand dunes rising out of the scrub and an improbable icy mountain in the middle of the desert.