For the latest Col Collective video, Mike Cotty heads to the highest paved pass in the Alps - the Col de l'Iseran.
First used in the Tour de France in 1938, the 2,764-metre pass has featured in the race six times since then.
The first of those was in the following year when it was on the route of an individual time trial from Briancon to Aix-les-Bains.
It returned in 1949, but since then has figured only sporadically - most recently in 2007 - and never as a summer finish.
Here are Cotty's thoughts on the climb.
Linking the Tarentaise and Maurienne valleys in the Savoie department of the French Alps, climbing the Col de L'Iseran is a journey into the wonders of the Vanoise, the country's oldest national park. Although the purists may prefer to start from Bourg Saint Maurice, for the full 48km ascent, in doing so you have to contend with the first stretch of the D902 which is a busy road, heavy with traffic and tunnels. From the famous ski resort of Val d'Isère to the summit the road is much quieter and if you pick your moment then there's every chance you'll have it all to yourself.
Just one of a whole host of mythical climbs on the fabulous Route des Grandes Alpes stretching from Lake Geneva all the way to the Mediterranean Sea, it's not often that you really get a true sense that you're climbing all the way to the very top of the highest peaks around you, but that's exactly what makes the Iseran so special, and at 2,764 metres elevation it's the highest road pass in Europe and the true giant of the Alps.
Start: Val d'Isère
Length: 16 km
Start Elevation: 1,854m
Elevation gain: 910m
Max gradient: 10%
Average gradient: 6%
Born in Scotland, Simon moved to London aged seven and now lives in the Oxfordshire Cotswolds with his miniature schnauzer, Elodie. He fell in love with cycling one Saturday morning in 1994 while living in Italy when Milan-San Remo went past his front door. A daily cycle commuter in London back before riding to work started to boom, he's been news editor at road.cc since 2009. Handily for work, he speaks French and Italian. He doesn't get to ride his Colnago as often as he'd like, and freely admits he's much more adept at cooking than fettling with bikes.