The southern side of the
Col d'Izoard is an exciting climb,
mainly because it crosses the fascinating Casse Déserte
(in English: the broken desert).
The grey and yellow-coloured Casse Déserte
consists of gigantic debris slopes,
here and there broken by steep rock formations
with heights up to 50-100 meters.
Here, on the side of the road,
a small monument in honour of Tour de France heroes
Louison Bobet and Fausto Coppi can be found.
The Casse Déserte forms the third and final part of the climb,
which starts in the valley of the river Guil
where the D902 splits from the D947.
The first part of the ascent (450 elevation meters)
takes place in a wide cultivated valley.
Here the road is hideously steepening
with the steepest part (12%) after the village of Brunissard
and at the transition to the second part.
The middle part is an ascent using a number of hair pin turns through a forest.
Here the slope is a steadily around 9%.
The Casse Déserte completes the climb.
The tour can be extended with a warming up
from the bifurcation of the D902A and the N94 near Guillestre
(difficulty 254 cep, climbing 511 m, length 20 km).