THIS route would definitely be in my top 10 all-time favourite walks. It is an absolute delight from start to finish. After completing the 4-km basic route described in last week’s paper – from the Prat de Pierró car park into the Aigüestortes national park – the path rounds Sant Maurici lake, to meet up with the GR-11 trans-Pyrenean footpath. It then ascends the wonderful, water-filled Ratera valley – following a stream, passing glacial lakes and the verdant pastures which enchant and beguile. The end point is the awesome high mountain area at the Port de Ratera pass at 2,594 metres.