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ROM an early period Cauterets enjoyed great repute. By a charter of 945 Raymond I, Count of Bigorre, granted the valley to the abbey of S. Savin, on condition that they built there a church in honour of S. Martin, and that they maintained at the hot springs a hospital for the patients who visited them.

Of these springs there are two groups. The upper, La Raillère, is at some distance from the town, but is reached by electric tram. It takes its name from the avalanches (raillères) that have made their pathway down the mountain side above it, and have left their white and ghastly scars on the rocks, and heaped wreckage below. This is the most abundant group of springs, but the space there is narrow, and lies in a gorge. The thermal establishment has to be maintained on huge walled terraces. There is no hotel there; but those who use the waters for baths or for gargling come