© OpenStreetMap · Protomaps · Terrain © Copernicus GLO-30

Explorepeaks.fyi3D

Pic Schrader

3,177 m

France, Spain

Also known as Bachimala, Schrader, +1

Bachimala · Schrader · Bachimala / Schrader

Elevation
3,177 m
Prominence
639 m
Difficulty
4/10
Alpine hike
Best Season
Jul–Sep
Routes
1

Routes

1
3D Preview
AlpineFSACT4ScrambleNormal route

The Spanish normal route from the head of the Gistaín (Chistau) valley: forest and pasture paths from the Refugio de Viadós (about 1,750 m) to the Paso de la Gatera (2,538 m), a traverse below the Punta del Sabre, a long, steep scree slope on the W side and a short, airy ridge to the summit. About 1,500–1,650 m of ascent, 3½–5 hours up.

Elevation Profile

1,5002,0002,5003,0003,5000 km123456Paso de la GateraPic Schrader
Distance
6.9 km
one way
Ascent
+1,512 m
−65 m lost on the way up
High Point
3,177 m
Time Up
6h 02m
DIN 33466
Time Down
4h 07m
DIN 33466 · same way back

From San Juan de Plan, a narrow but drivable dirt track of about 10–12 km climbs the Zinqueta valley to the Refugio de Viadós (about 1,750 m); park at the end of the track below the refuge, or in summer a little lower. The path starts behind the refuge (signpost for Plano de Tabernés, Bachimala and Señal de Viadós) and climbs steep zigzags through pine forest. After 15–20 minutes leave the left-hand branch to Tabernés and continue north-north-east past the Cabaña del Sarrau (about 30 minutes), then over grassy slopes in a wide curve, skirting the Señal de Viadós on its left, to the Paso de la Gatera (Señal de Viadós, about 2,538 m), about 1 h 40 min. From the pass head north-west. Cairns are sparse at first, then a clear path traverses below the ridge of the Punta del Sabre into a hollow that holds old snow, where the path from Tabernés joins. At about 2,700 m keep left (easier, a slight detour) rather than right (more direct, loose rock needing the hands), go round the W spur on its left, and climb the W scree slope: about 400 m of steep, stony but well-trodden path from about 2,800 m. It reaches the ridge, which is followed right to the summit; the ridge is airy but fairly broad, with 15–20 m of easy scrambling. Allow 3½–5 hours from the refuge. Descend the same way, 3–4 hours. There is no water above the refuge, and accessible snow patches are increasingly rare in summer. In rain, snow or strong wind the final ridge needs care. A harder alternative climbs from the col at the foot of the Punta del Sabre by two short chimneys (II) over the Punta del Sabre (3,136 m) and along the ridge (PD-).

Start

Refugio de Viadós1,730 m

  • No public transport to Viadós; buses run to Aínsa and some lines serve the Gistaín valley villages, but none to the track end were found.
  • Parking at the trailhead

Stages

DayStagekmm ascentm descentTime
1Refugio de Viadós → Pic Schrader6.91,512656h 02m

Waypoints

  1. Parking:
    Refugio de Viadós1,730 m

    Parking at the end of the dirt track just below the refuge

  2. Waypoint:
    Cabaña del Sarrau2,031 m

    Shepherds' hut about 30 min above the refuge

  3. Col:
    Paso de la Gatera2,540 m
  4. Summit:
    Pic Schrader3,177 m

Key Passages

  • Paso de la Gatera (Señal de Viadós)
  • Long, steep W scree slope from about 2,800 m
  • Short airy summit ridge (15–20 m of easy scrambling)

Equipment

0/7 packed
Technical
Safety
Footwear
Clothing
Other

Downloads

Route confidence 75%

Overview

The Gran Bachimala or Pic Schrader (3,177 m), highest of a chain of nine 3,000 m tops on the France–Spain border at the head of the Gistaín valley. A long but non-technical day from the Refugio de Viadós, with a steep scree slope and a short airy ridge.

Pic Schrader, known in Spain as the Gran Bachimala and in France as the Grand Batchimale, is the culminating point of a north–south border ridge between the Port de la Pez and the Port d'Aygues-Tortes, which carries no fewer than nine summits above 3,000 m. It closes the head of the Gistaín (Chistau) valley in Aragon, opposite Posets, and looks down on the French Val du Louron to the east. The French name honours the geographer and cartographer Franz Schrader, who climbed it in 1878.

On the Spanish side the mountain is a big, stony whaleback. The normal route from the Refugio de Viadós has no real technical difficulty, but it involves 1,500–1,650 m of ascent, a long steep scree slope and a short exposed ridge, and there is no water above the refuge. The view takes in Posets, the Maladeta massif, Perdiguero, Monte Perdido and the Vignemale.

From France the approach from the Refuge de la Soula is longer and wilder, with few cairns above the Port d'Aygues-Tortes. Climbers traverse the full Batchimale crest (PD to PD+) or go over the Punta del Sabre.

Climbing Notes

Fitness for a 6½–8 hour day with up to 1,650 m of ascent is the main requirement. Sure-footedness on long loose scree and a steady head for the short summit ridge are needed, and a helmet is sensible. Carry all your water. Many people drive to Viadós the evening before and stay at the refuge or the Forcallo campsite to start early, as afternoon storms often build over Posets.

The route is best from July to September, once the snow has gone from the W slope; earlier, crampons and an ice axe are needed. The dirt track to Viadós is narrow and slow, and the refuge is open mainly in summer and at Easter. From France, plan two days via the Refuge de la Soula.

History

The first ascent was made in 1878 by Franz Schrader with his guide Henri Passet. On 10 September 1878 Henry Russell, Célestin Passet and Vincent Grassy made the second ascent, climbing the east ridge of the Punta del Sabre and finishing by the west side. Albert and George Cadier made another early ascent on 12 August 1902, with the first traverse of the south crest.


Season

Best Jul–Sep
  1. January: Not advisable
  2. February: Not advisable
  3. March: Not advisable
  4. April: Not advisable
  5. May: Not advisable
  6. June: Possible
  7. July: Best (best window)
  8. August: Best (best window)
  9. September: Best (best window)
  10. October: Possible
  11. November: Not advisable
  12. December: Not advisable
Jan
Winter; ski touring only
Feb
Winter; ski touring only
Mar
Ski touring
Apr
Ski touring; Viadós may open at Easter
May
Snow on the upper slopes
Jun
Snow in the hollow and on the W slope; crampons often needed
Jul
Viadós refuge open; afternoon storms
Sep
Refuge open until the end of September
Oct
Refuge closed; early snow possible

Access & Permits

Hut Booking
Refugio de Viadós (private): book by phone (+34 974 341 613) or via viados.es; a small unstaffed shelter above the refuge is open when it is closed.
Rules
  • Part of the Gistaín valley around Viadós lies in the Parque Natural Posets-Maladeta; park regulations apply
Getting There

Plan and San Juan de Plan (Gistaín valley, Huesca)

Zaragoza (ZAZ); Lleida-Alguaire (ILD); Toulouse (TLS)

  • Car: A-138 towards Bielsa, turn east at Salinas to Plan and San Juan de Plan, then the narrow dirt track of about 10–12 km to Viadós
  • From France: road to the Pont du Prat in the Val du Louron and a path to the Refuge de la Soula
  • No public transport to Viadós was found

Hazards

  • Rockfall
  • Exposure
  • Weather
  • Remoteness

Huts & Shelters

1
Researched from 8 sourcesConfidence78%UnreviewedUpdated 8 Oct 2026
Sources & Caveats
  • merged with Wikidata/OSM names
  • Natural Earth 10m point-in-polygon + 300 m border buffer; Wikidata P17 countries whose border is within 5 km
  • Elevation: the skeleton gives 3,177 m (Wikidata, OSM, Spanish walking sources); Camptocamp gives 3,174 m.; Refugio de Viadós capacity (70) and season are from Camptocamp and were not confirmed on the refuge's own site; 2026 dates were not checked.; Whether the summit itself lies within the Parque Natural Posets-Maladeta was not confirmed; Camptocamp says part of the valley is in the park.; The SAC grade for the W-slope line (T4) is an estimate; Camptocamp grades its route T5 because it includes the Punta del Sabre chimneys.; No French-side normal route is described in detail; the Soula approac
  • normalizeGrade of the easiest researched route
  • OSM agrees
  • coordinates: 1 approx
  • Kirmse analysis gives 571 m (raw GLO-30 509 m)
  • P4552 chain
  • 100% OSM trail graph, 0% short gaps between OSM fragments, 0% DEM least-cost, 0% straight (approx)
  • elevation from copernicus_glo30