has finally emerged from a miserable winter into a glorious if unreliable springtime, so it's time to get out and enjoy the region's natural beauty.
The northern coastal strip of Spain consisting of Galicia
and the Basque Region
has the best outdoor and underground adventures the country has to offer. Its combination of scenic hikes and extensive caves is thanks to the predominance of karst, a type of stone the weathers quickly with water. As you can see from the picture above, rain turns exposed karst into strange, picturesque shapes. When water flows underground it carves out long caves.
One of the best places to see this at work is the Parque Natural de Collados del Asón
in Cantabria. Less than an hour's drive from both Santander and Bilbao, this 11,700-acre natural park is cut through by the Asón River and several smaller streams. Those and the frequent rainfall have scoured the terrain into a series of gorges and cliffs. A network of trails provides lowland rambles past traditional farmhouses and challenging climbs up to rugged and snowy peaks. The dark mouths of several caves beckon to you from the trailside, but these aren't places to explore without training and preparation.
The weather was glorious the day we went. When you have a fine day here in the north, you get outside. Luckily, you don't need good weather to get some exercise. The next time I went out we were pelted with a chilly northern rain, perfect conditions to explore Green Spain's other outdoor attractions – its caves.
is big here, with several organizations and adventure travel companies ready to show you the ropes. And for many caves, ropes are what you'll need. As water cuts through the stone, it often finds fissures and plunges downwards, gradually widening them into vertical shafts. Rappelling into Stygian darkness is one of the best thrills caving has to offer.
One cave where you don't actually need ropes is Cotera Cave
, not far from the famous prehistoric painted cave of Altamira
, 20 minute's drive outside of Santander. The entrance isn't terribly inviting – an almost invisible trail snarled with brambles leads to a low opening where cows take shelter from the rain. Cows, being cows, have left more than their hoof prints behind.