The geography of Catalonia, the last Iberian region with which we have to deal, is more simple than that of Galicia. The land is formed by a broad mountain belt running out from the eastern end of the Pyrenees, parallel to the Mediterranean. From this chain the slopes run down and form on the eastern side a coast-plain, generally rather narrow, on the western a series of parallel valleys drained by tributaries of the Segre, the most important affluent of the Ebro. They all unite near Lerida, an important town and a great centre of roads. But two considerable rivers, the Ter and the Llobregat, have small basins of their own in the heart of the central mountain mass, which open down into the coast-plain by defiles, the one blocked by the peak of Montserrat, the other by the town of Gerona. During the greater part of the Peninsular War the French held the larger share of the shoreland, dominating it from the great fortress of Barcelona, which they had seized by treachery ere hostilities began. In 1811 they captured Tarragona also, the second capital of the sea coast. But they never succeeded in holding down all the small upland plains, and the minor passes that lead from one to the other. Hunted out of one the Spanish army took refuge in the next, and, though it dwindled down ultimately to a mass of guerilla bands, was never caught _en masse_ and exterminated. There were too many bolt-holes among the network of hills, and the invaders never succeeded in stopping them all, so that down to the end of the war the patriots always maintained a precarious existence inland, descending occasionally to the shore to get ammunition and stores from the English squadrons which haunted the coast. They were supplied and reinforced from the Balearic Isles, which Napoleon could never hope to touch, for his power (like that of the witches of old) vanished when it came to running water. The survival of the Catalan resistance after the French had drawn a complete cordon around the hill-country, holding the whole coast-plain on the one hand, and Lerida and the Segre valley on the other, is one of the incidents of the war most creditable to Spanish constancy.
Having dealt with the physical geography of Spain, it is necessary for us to point out the way in which the natural difficulties of the country had influenced its main lines of communication. Roads always take the ‘line of least resistance’ in early days, and seek for easy passes, not for short cuts. The idea that ‘time is money,’ and that instead of going round two sides of a triangle it may be worth while to cut a new path across its base, in spite of all engineering difficulties, was one very unfamiliar to the Spaniard. Nothing shows more clearly the state of mediaeval isolation in which the kingdom still lay in 1808 than the condition of its roads. Wherever the country presented any serious obstacles, little or no attempt had been made to grapple with them since the days of the Romans. The energetic Charles III, alone among the kings of the seventeenth and eighteenth centuries, had done something to improve the system of intercommunication. He had, for example, superseded the old break-neck road from the plains of Leon into Galicia, by building the fine new _chaussée_ from Astorga to Villafranca by Manzanal; but among the line of Hapsburg and Bourbon sovereigns Charles was a rare exception. Under the imbecile rule of his son (or rather of Godoy) improvements ceased, and internal communications were as much neglected as any other branch of state management. What roads there were, when the war of 1808 broke out, were in a state of dreadful neglect. The Spaniard was still too prone to go round an intolerable distance rather than attempt a serious piece of engineering work. Let us take, for example, the northern coast of Spain: the Cantabrian range is no doubt a most serious obstacle to intercourse between Castile and Leon, on the one side, and the maritime provinces of Asturias and Biscay on the other. But who would have conceived it possible that in a length of 300 miles of mountain, there should be no more than five roads practicable for wheeled traffic and artillery? Yet this was so: to get down from the central plateau to the coast there are only available these five routes--one from Leon to Oviedo, one from Burgos to Santander, one from Burgos to Bilbao, one from Vittoria to Bilbao, and one from Vittoria to San Sebastian and Irun. There were many other points at which a division travelling in light order without guns or baggage could cross the watershed--as was shown in Blake’s flight from Reynosa and Ney’s invasion of the Asturias. But for an army travelling with all its _impedimenta_ such bypaths were impracticable.