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La grande dalle

Pic de Luc – Le Claps · Pic de Luc (Diois) · France

Read the cautionsEasy to bail

A huge, easy grey slab above the Saut de la Drôme, steepening from 45 to 60 degrees: ideal for a first multi-pitch, for practising rope work or for learning to trust your feet. Grade 3 at the bottom, 4c to 5a at the top, and a fine view over the Diois.

Climbing mode: Big type, screen kept awake, tick pitches as you go.

Hardest pitch
5a5a
Pitches
8
Length
175 m
Approach
30 min
Aspect
S
South-facing
Rope
2×50 m
to abseil

Highest point 1000 m above sea level (camptocamp route 54775).

Rock
limestone
Season
Feb to May, Sep to Dec
Bolting confidence
High
Last verified
October 2026 · Aggregated by AI from published sources
Read before you go

Rebolted and easy, but bolts are spaced on the slab, so a nervous leader should not treat it as a first lead; the walk-down is steep and loose.

Photo

Climbing modeBig type, screen kept awake, tick pitches as you go.

Overview

La grande dalle climbs the vast tilted slab of Le Claps, the landslide cliff of the Pic de Luc above the Saut de la Drôme near Luc-en-Diois. Two parallel bolted lines run up the grey slab a few metres apart and it is easy to swap between them; the right-hand line is described here. The first four pitches are very easy and can be climbed together on a short rope; the last three steepen to 4c and a step of 5a. It is one of the most frequented beginner multi-pitches in the area and a classic venue for club courses.

Worth knowing

  • Climb the first four pitches together with about 15 quickdraws to save time.
  • If the route is busy, Faut pas clapser is about 100 m to the left (but its belays are partly single bolts).
  • About 1.5 to 3 hours on the route.

Pitch by pitch

The atlas doesn't show topos: they are the work of the people who bolt and document these routes. See the topo at camptocamp.org, or in Escalades dans le Diois.

Pitches of La grande dalle
PitchGradeLengthNotes
P13a50 mEasy slab, 8 to 9 bolts. The left-hand line has a 52 m first pitch.
P23a35 mEasy slab, 7 to 8 bolts, to a small ledge.
P33b40 m7 to 8 bolts.
P43c/4a35 m5 to 6 bolts. The belay is just below a wide bushy ledge and is not visible from below: aim straight up above the last visible bolt towards a large box bush; further right the ledge is loose.
P5250 mLow-angled slab with bushes and stony patches, 4 to 5 bolts, to a comfortable belay level with a pine in line with R4.
P64b/4c45 mSteeper, 9 to 10 bolts, to a chained belay below a flake.
P74c30 m8 to 9 bolts.
P84b/5a25 m7 to 8 bolts to the chained top belay, with a view over the Diois. Pitches 7 and 8 link if the second moves up 2 to 3 m.

Approach

To the parking

Drive the D93 from Die towards Luc-en-Diois. The route is above Le Claps and the Saut de la Drôme, just south of Luc. The upper car park at the Saut de la Drôme is the best place to park; there are lower car parks by the road narrows.

On foot · about 30 min

25 to 45 minutes. From the upper car park follow a path marked with small red dots and cairns up the left bank of the boulder chaos to the foot of the slab, keeping right at the start. From the lower car parks, a path marked with blue squares and cairns starts just downstream of the road narrows. The route starts 20 m of easy ground above the bottom of the slab, at a comfortable terrace with bushes (R0: three grey glue-ins in the slab, hard to see).

Map of the walk-in

Coordinates · route base

44.60594, 5.46092

Parking

44.60261, 5.46246

camptocamp waypoint 275388 (Le Saut de la Drôme)

DirectionsDriving directions

Point from camptocamp route 54775

For your phone or watch

Download GPX

Contains the route point and parking.

Points from published sources, not surveyed.

Descent

Abseil the line with 2×50 m ropes: 7 or 8 abseils (R8 to R6 may go in one; check on the way up), with 10 m to downclimb at the end; allow about 2 hours back to the car. Or go over the ridge and walk down the far side along the cliff, about 30 minutes to the lower car parks: steep, stony and tiring but not exposed. Good shoes or poles help.

Bailing off the route

Easy to bail

Abseiling the route is a normal descent: every belay is bolted and the slab is easy to retreat down with 2×50 m ropes.

Retreat from
Any belay.
Point of no return
None.
Carry
2×50 m ropes.
Basis
Stated in the sourcesCamptocamp gives the abseil descent down the line as one of the two normal descents.

France

In an emergency

In an emergency · France

112Emergency; sends PGHM or CRS mountain rescue

Call 112

Emergency; sends PGHM or CRS mountain rescue

Position of the route base

44.60594, 5.46092

Say what happened, how many are hurt, and where you are. Checked October 2026 (source).

Hazards

  • The slab is easy but needs confidence on friction; a fall on a low-angled slab scrapes.
  • Some fragile rock and loose stones on ledges, especially near the ridge.
  • Abseiling with the rope blowing back up in strong wind; one 2026 party had a stuck rope and a forgotten knot.

Gear

10 quickdraws (about 15 if you move together on the first four pitches). 2×50 m ropes to abseil, or a single rope if you walk down.

Checklist

Quickdraws
10
Rope
2×50 m (to abseil)
Helmet
One each
Abseil device and prusik
For abseiling

Conditions

Reader reports

No reports yet.

Report a problem with this route

Say what and where. Reports are checked before they appear; no name or email is stored.

Bolts and history

Bolting
Two parallel lines a few metres apart, both on glue-in bolts; the route was rebolted with more bolts by February 2022. Belays are bolted, the upper ones chained. Recent parties call the equipment spotless, though spaced on the very easy lower slabs.
History
Rebolted with denser bolting, noted in February 2022 (camptocamp). Opening details not published.
Guidebook
No guidebook was identified in the sources checked; camptocamp has the detailed description. Buy from kletterfuehrer.net.

Where sources disagree

  • Length: the right-hand line is described as 175 m high and about 250 m long; a 2025 party gives 310 m for the left-hand line.
  • Spacing: a 2022 party counted twice as many bolts as the old topos after the rebolt and several call the equipment spotless, but parties in April and August 2022, June 2024 and June 2025 still describe the bolts as spaced, notably on pitches 7 and 8.

Sources

Around 5a · about 8 pitches

Similar elsewhere

No photo yet

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Switzerland · Wiwanni (Baltschiedertal)

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The classic easy introduction to Grimsel granite: nine pitches of smooth, low-angle slab that follow a long, stair-like corner and a line of cracks, with a short steeper wall on pitch 7. Clean rock with no grass ledges, a short approach and an easy walk down.

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Germany · Ammergauer Alpen

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The classic way up the Geiselstein, the 'Matterhorn of the Ammergau Alps'. After two scrappy pitches it follows a slabby corner system up the middle of the sunny south face: steep, exposed and on good rock, at about UIAA IV with one polished move of V at the start of the corner. The descent by the normal route needs as much care as the climb.

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Researched and aggregated by AI from published sources, last compiled October 2026. It can be wrong, and bolts, anchors and access change: check a current guidebook and read the disclaimer.