At 35 kilometres long by 12 kilometres wide, it’s easy to explore Sal by bike or car, and the dusty interior is out of this world. The parched desert that covers much of the island has been compared to the planet Mars, and there are plenty of options for bumping across it in a 4×4. Try No Limits for guided hummer tours with a spot of local history thrown in (from €50 pp). Up for a solo adventure? You could always hire a quad bike and go it alone – Cabo Quad (Tel: 242 1590) in Santa Maria is just one of several rental places.