A brutally steep green giant in the heart of the Asturian mountains, the Alto de l'Angliru is one of cycling's iconic climbs. Since its 'discovery' and inclusion in the Vuelta a España in 1999, riders have struggled up its fierce gradients, and fans flock here from around the world to witness the drama. Ex pro cyclist Conor Dunne returns to this beast of a climb for the first time since crawling his way up on Stage 20 of the 2017 Vuelta. Joining Conor is David Millar facing his own demons, after his 2002 Vuelta when he crashed twice in heavy rain and fog. These horrific conditions led to his dramatic protest, refusing to cross the finish line. Ex pros Chechu Rubiera and Samuel Sánchez also explain what the notorious Angliru means to them.