{
  "name": "Desfiladero de La Hermida",
  "slug": "n-621-desfiladero-de-la-hermida",
  "url": "https://www.bestdrivingroads.com/roads/n-621-desfiladero-de-la-hermida/",
  "summary": "Spain's longest gorge, where the N-621 threads a deep limestone canyon beside the Deva river into the eastern Picos de Europa.",
  "roadNumbers": [
    "N-621"
  ],
  "location": {
    "country": "Spain",
    "region": "Cantabria",
    "start": {
      "name": "Panes",
      "lat": 43.323598,
      "lon": -4.584194
    },
    "end": {
      "name": "Lebeña",
      "lat": 43.215309,
      "lon": -4.592492
    }
  },
  "measurements": {
    "lengthMiles": 11.7,
    "lengthKm": 18.8,
    "driveMinutes": 22,
    "corners": 90,
    "hairpins": 0,
    "maxGradientPercent": 6,
    "summitMetres": 252.3,
    "elevationConfidence": "measured",
    "difficulty": "moderate",
    "tightnessOutOf10": 4
  },
  "timing": {
    "bestSeasons": [
      "spring",
      "summer",
      "autumn"
    ]
  },
  "conditions": {},
  "hazards": [
    "Oncoming traffic on narrow pinch points",
    "Ongoing roadworks and temporary lights",
    "Rockfall and shadow ice in the deep gorge"
  ],
  "scenery": [
    "gorge",
    "mountain",
    "valley"
  ],
  "pointsOfInterest": [
    "Mirador del Salmón",
    "Vía ferrata Escalera al Cielo K3"
  ],
  "geometry": {
    "pointCount": 169
  },
  "attribution": {
    "source": "Routes - bestdrivingroads.com",
    "citation": "Cite with a link to the road page. Stats are measured from the mapped line, not copied from other lists; where elevationConfidence is \"approximate\" the 30 m DEM cannot resolve that line and the elevation figures are indicative.",
    "roadGeometry": "(c) OpenStreetMap contributors, ODbL",
    "terms": "Facts are free to cite with attribution; bulk reproduction of the catalogue requires permission (simon@keane.studio)."
  },
  "updated": "2026-07-25"
}