Col de Bavella: "U Cumpuleddu" (The Bomb Hole)

This hike will take you to "U Cumpuleddu", more commonly known as "Trou de la Bombe" (Bomb Hole), a geological formation caused by erosion. The route also offers beautiful views of the Aiguilles de Bavella mountain range. Much of the hike takes place under the cover of Laricio pine trees.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 5.70 km
  • ◔
    Average duration: 2h 10 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 196 m
  • ↘
    Descent: - 202 m

  • ▲
    Highest point: 1,314 m
  • ▼
    Lowest point: 1,209 m
  • ⚐ Country: France
  • ⚐ District: Quenza (20122)
  • ⚑
    Start/End: N 41.795683° / E 9.224835°
  • ❏
    IGN map(s): Ref. 4253ET, 4253ETR
  • Hour-by-hour weather

Photos

Description of the walk

Park in the car park at the Col de Bavella next to the tourist information centre (remember to pick up some information). The trail is marked with red signs and wooden posts.

(S/E) The trail starts with an ascent through a forest of Laricio pines and then arrives at a flat area. Looking back, you will have a beautiful view of the Aiguilles de Bavella. Continue along the path and pass the antennas on your left. Continue until you reach a sign for "U Cumpuleddu".

(1) Turn left and follow the red markings. You will reach another intersection. Turn right towards "U Cumpuleddu". The path climbs to a flat area still in the Laricio pine forest. You will reach another sign indicating the view of the "Trou de la Bombe" (Bomb Hole).

(2) Take a short detour to the left to admire this amazing geological formation in the distance. Retrace your steps to return to the original route towards the hole. You will reach a new fork.

(3) Turn left towards "U Cumpuleddu". The path then becomes slightly more complicated. Steep passages over rocks lead to the Trou de la Bombe. Follow the red markings carefully!

(4) The more daring may venture inside the hole. The path is no longer marked at this point. Take care, as this approach requires some mountain experience: a few steps of climbing are necessary to secure your feet and hands, especially on the descents. Not recommended for those prone to vertigo.

Return by following the red markings. The path is slightly different than on the way there for about 50 metres. It avoids the large steep slab, which can be slippery when wet. Then follow the red markings and the signs for "retour Bavella" (return to Bavella).

Keep to the right, continuing to follow the red markings and the sign for "retour Bavella". When you reach the sign for
"Belvédère".

(5) Take the path on the right that climbs up a slight rocky promontory: the path is not shown on the IGN map but is marked on OSM. You will have a beautiful view of the Aiguilles de Bavella; the other large rock, called Dame Jeanne, is difficult to access.

Return to the main trail and descend carefully for about 100 metres. Cross the stream and stay on the red trail until you reach another intersection about 100 metres further on. Turn left onto the red trail and leave the trail on the right

(6). Continue straight ahead (red markings) to reach the Col de Bavella car park (S/E).

Waypoints

  1. S/E : km 0 - alt. 1,219 m - Parking at the Bavella Pass - Col de Bavella (1217m)
  2. 1 : km 1.28 - alt. 1,286 m - "U Cumpuleddu" sign
  3. 2 : km 1.99 - alt. 1,310 m - Small detour to the left
  4. 3 : km 2.41 - alt. 1,262 m - Fork in the road: A/ left - R/ right
  5. 4 : km 2.85 - alt. 1,301 m - "U Cumpuleddu"
  6. 5 : km 4.25 - alt. 1,286 m - Promontory trail on the right
  7. 6 : km 5.27 - alt. 1,217 m - At the chapel junction, continue straight ahead.
  8. S/E : km 5.7 - alt. 1,219 m - Return to the car park - Col de Bavella (1217m)

Notes

New route since 2020! Follow the new signs and stay on the marked trails. Pedestrians are now prohibited from using the DFCI track at the end of the car park, which was the start or end point of the old route.

The car park is subject to a charge. A free shuttle bus is available from the Viseo racecourse car park (between the Col de Bavella and Zonza), which is also subject to a charge.

(2) If you are tired or for any other reason feel that it is too difficult to continue, turn back and follow the route via (5) and (6).

(6) Alternative: turn right to pass the chapel and then join the road to the pass. Then climb up to the left to the car park.

Always check the current and forecast weather conditions so you can adjust the contents of your backpack. The weather can deteriorate quickly at the Col de Bavella (storms, rain, hail, strong winds), which can cause temperatures to drop and make progress on the trail more difficult due to rain and fog. Stay alert! It can get very hot. There are no water sources along the hike. Remember to bring enough water for everyone.

Wear clothing suitable for mountain hiking (walking or trail shoes).

Please behave in a manner that respects the mountain environment: be discreet (no drones), keep the area clean (take your rubbish with you) and keep your dog on a leash.

Reviews and comments

4.7 / 5
Based on 63 reviews

Reliability of the description
4.8 / 5
Ease of following the route
4.7 / 5
Route interest
4.6 / 5
User 27289727

Overall rating : 5 / 5

Date of your route : Oct 27, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

At the end of October, there are few people on this hike, which is very well marked, both on the way there and back.
However, it was 10 degrees colder than lower down and very windy. Make sure you are well equipped.
The final access to the hole is indeed a little technical, and unfortunately I was unable to reach it due to an injured shoulder.

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User 27212453

Overall rating : 4.3 / 5

Date of your route : Sep 16, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

Part of the walk is very steep with lots of stones and rocks, so these are normal paths for Corsicans but not for everyone. This hike is not recommended for tourists in flip-flops, as it is far from being a simple stroll.

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PHLNT72
PHLNT72

Overall rating : 4.7 / 5

Date of your route : Sep 28, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

Good, but very crowded during the weekend.

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JJDREHER
JJDREHER

Overall rating : 5 / 5

Date of your route : Oct 06, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

The last 100 metres leading to the "hole" require climbing...

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gaetanbodin
gaetanbodin

Overall rating : 5 / 5

Date of your route : Oct 03, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Very good hike.
Very good trail, a bit more challenging towards the end, to be honest, but a very nice surprise.
Please note that there is no direct access to the bottom of the waterfall; it is accessible but very steep and unmarked.
Enjoy your walk!

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Barbier Sylvie
Barbier Sylvie

Overall rating : 4 / 5

Date of your route : Sep 23, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : Yes

Beautiful route, unfortunately too crowded even in mid-September

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User 19401054

Overall rating : 5 / 5

Date of your route : Aug 31, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A very beautiful hike, well explained by Visorando and with clearly visible red markings. It was very busy on the last weekend of August, with a slight bottleneck at the bomb hole for people taking photos.
Level of difficulty: fairly easy with minimal physical fitness required. A few climbs and descents with roots, but nothing insurmountable.
Very enjoyable to do

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User 11289931

Overall rating : 5 / 5

Date of your route : Aug 05, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A beautiful hike (early in the morning due to the heat) that can be enjoyed with the family. The trail is well marked and very easy to follow until you reach the rocks leading to the hole. Climbing the rocks is not difficult. Be careful when you reach the hole, as there is a drop below.
We did this on the day of the pilgrimage to the Bavella Pass, so there were a lot of people there at the end of the morning.

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User 3954477

Overall rating : 5 / 5

Date of your route : Jul 03, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Before setting off on the hike, I read some comments that said it wasn't very well signposted.
But that wasn't the case at all. The signs were very clear, and the hike was pleasant, easy and not very busy when we did it, as it was early in the season.

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FMO94
FMO94

Overall rating : 4.7 / 5

Date of your route : Jun 28, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Well-marked walk. Remember to take the indicated detours.
Access to the view of the bomb hole is a little more difficult, but the return route avoids this wall.

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Freddo73
Freddo73

Overall rating : 4.3 / 5

Date of your route : Jun 26, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A lovely 2 hour 10 minute walk at the end of June
Minimal signposting. Thank you Visorando for the route map
Difficulties in the last few metres finding the right path. The trail becomes more steep and rocky. Glad I had the right shoes.
Nice view at the end. Overall, the route is well shaded.

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User 25796162

Overall rating : 4.7 / 5

Date of your route : Jun 23, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

Nice site but very busy

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Daniel 139
Daniel 139

Overall rating : 4.3 / 5

Date of your route : Jun 23, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

I couldn't find the final section to access the bomb hole, which is the objective of this hike, as it isn't detailed. Lots of different routes end in dead ends and I only found one spot close enough to take a photo. It would therefore seem impossible to reach it without climbing.
Final details to be clarified by the more talented among you.

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claude12
claude12

Overall rating : 4.7 / 5

Date of your route : May 26, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

A beautiful, fairly easy hike. Already quite crowded (20 May).

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Xtophe*
Xtophe*

Overall rating : 5 / 5

Date of your route : May 17, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Hike completed in May. The trail can be busy at this time of year, and is likely to be much busier in summer. No particular difficulties, except for the very last section before you see the bomb hole, where you need to be careful with young children.

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