Eaux-Bonnes, France
The Siala via ferrata sits in the Ossau valley of the French Pyrenees, just below the Gourette ski resort on the road up to the Col d'Aubisque. The draw is the panorama: as you climb the wall, the view opens progressively down the Gave du Valentin gorge and out toward Laruns and the Aubisque pass. The approach is short, 5 to 10 minutes down through beech and boxwood, and there are two possible starts. One goes straight to a Nepalese bridge over the river; the lower option takes you through the Siala gorge, across a monkey bridge over turquoise water, around a rocky bulge with three exposed foot rungs that demand real pulling on the hand cable, then back across a second bridge past a waterfall that sprays the rungs during snowmelt. Griffon vultures ride the thermals here and often circle directly overhead. The finish is in forest among blueberry bushes.
Roughly 150 to 180 m of vertical gain over 250 to 300 m of cable, about 2 to 2.5 hours on the wall plus a 25 minute return (10 minutes down to the road following red arrows, then 15 minutes back to the start). It begins gently on a 60 m low-angle slab, then steepens. At two thirds height you choose: the left-hand line is slightly easier and longer but finishes on more than vertical rock with a dihedral overhang and a short intense bulge, while the right-hand line is the serious one, a 10 m traverse into a 12 m overhang, three rungs of rest, then a 13 m overhanging wall. That harder branch is genuinely arm-draining, so pick it only if you climb regularly. Helmet, harness and an energy-absorbing via ferrata lanyard set are required. Season is May to October. Two things people miss: there is an escape route just before the overhangs on the difficult branch, so commit early rather than mid-crux, and going right after heavy snowmelt means climbing wet, slippery bars near the waterfall.
