Roland's Breach, Ordesa y Monte Perdido National Park, Spain

High up in the Pyrenees, there is a gap in the mountains.

More than 90 metres tall and 39 metres wide, Roland's Breach, featured here today, is a sight to behold.

But who was Roland?

Count Roland was a Frankish military leader during Charlemagne's reign in the 8th century.

Legend has it that, after being defeated in battle, Roland cut a gap in the mountains—either to destroy his sword or to catch one last glimpse of France.