One of the three great barranco drives up into the Gran Canaria highlands, the GC 605 hairpins its way up the Mogan Valley until it reaches the cumbres at Ayacata village just below Roque Nublo.
The GC 15 is the main northern route up from Las Palmas to Cruz de Tejeda and the Gran Canaria highlands. It's windy but wide and runs through the green valleys and hillsides of northeast Gran Canaria and a series of interesting towns and villages.
Gran Canaria's least-driven road takes you to white villages surrounded by palm and almond trees and past Roque Palmés: Little brother to Roque Nublo.
The GC-606 road is only 12 kilometres long according to Google Maps but takes a good hour and a half to drive as it is barely wide enough for a car and long stretches are barrier-less. It's spectacular or terrifying, depending on how you handle heights.
Starting as a fork on the GC-60 between Tejeda and San Bartolomé (Tunte) it winds downhill to the tiny hamlets of El Toscón and Carrizal de Tejeda before linking to the GC 210 that links Tamadaba with La Aldea. Between the two is a viewpoint overlooking Roque Palmés.
The lower half of the road is the scariest as there's nothing between you and the Barranco bottom hundreds of metres below. Stop for great views back towards the Tamadaba massif and the Presa de Parralillo reservoir in the valley.
This pie slice of the island tucks into a fold and is hidden from the main Cumbre roads. That and the fact that it links up to another crazy road: The GC 210 between Artenara and La Aldea, make it Gran Canaria's least driven tarmac route.
For an idea of just how wild and rugged west Gran Canaria is we recommend it: Just takes things slowly and use the horn on the blind bends.