Between the plains of Lleida and the first serious mountains of the Pyrenees there is a band of country that most people cross without noticing, and it is a mistake. The Cova del Cogulló lies here, in the hills of the Noguera between Artesa de Segre and the Montsec, a long limestone wall that rises abruptly from the farmland. Rock shelters in these hills carry prehistoric paintings, part of the Mediterranean rock art tradition that runs all along eastern Spain, and the region's churches add a medieval layer, small Romanesque buildings in nearly every village.
Artesa de Segre is a small town on the river Segre, with a few thousand people and the essentials. North of it, the land wrinkles into dry hills of oak and pine before slamming into the Montsec, which is cut by the dramatic gorges of the Noguera Pallaresa and the Noguera Ribagorçana. The Àger valley behind the range has become famous for its dark skies, with an astronomical park and observatory taking advantage of the lack of light pollution. Vultures and eagles ride the thermals along the cliffs, and the air in spring smells of rosemary and broom.
For riding, the area is superb and quiet. Roads climbing toward the Montsec and over its passes offer sequences of corners on clean, grippy surfaces with almost no traffic, and the views back across the plain toward the distant Pyrenean peaks are huge. The run toward Tremp passes reservoirs of improbable turquoise. Expect strong sun in summer, frost and occasional snow on high bends in winter, and plenty of cyclists and climbers at weekends. Some of the minor lanes to the shelters are narrow, steep and patched; take your time.
Fuel is available in Artesa de Segre and Ponts; beyond that, villages are small, so plan ahead before heading into the Montsec. Tremp, the main town of the Pallars Jussà, is about twenty kilometres away and has everything. Catalan country cooking is generous: grilled meats, snails in season, mountain sausages and coca bread, washed down with water if you are riding. Give the shelters the respect they deserve, keep to the paths, and finish the day on a high road above the Segre, watching the plains turn pink and the Montsec go dark against the sky.