Mainland Spain's highest peak is Mulhacén. Standing 3,285m proud of the surrounding countryside, it is Europe's third most prominent peak.
With temperatures likely to top 35°C at sea level and hovering around freezing on the summit, it will be a difficult one to pack for, and it's likely that a rucksack weighing ~20kg with food, camping gear and mountaineering equipment will be coming with me, on a 5 day round trip.
The north face of the mountain is the most challenging, and the chosen route cannot be completed by hiking alone: ropes, a harness and other climbing gear will be required to scale cliffs encountered on the way.
This will be a solo expedition, and the highest climb of my life, but if you'll pledge to donate to Centrepoint to help young homeless people in the UK, I pledge to come back with pictures of a Centrepoint/Affiliate Window flag flying on the zenith of Spain's most imposing peak.