Bertheaume Iroise Aventure

Base de loisirs

Why take advantage?

On an exceptional natural site! Come and discover with family or friends the pleasures of the iodized courses on the islet of Fort de Bertheaume at the exit of the Rade de Brest, in Plougonvelin.

Rocky Adventure Course, average duration 1h30

Bertheaume Iroise Aventure offers rock courses with continuous lifelines, scalable to all levels of difficulty, zip lines, cable bridges (Tibetan bridge, monkey bridge, Nepalese bridge, caving ladder)!

We sometimes have to postpone or cancel certain departures, depending on weather conditions: wind direction and strength, tidal range and wave height.

For all these reasons, it is imperative to make a reservation by calling 07 84 46 36 44.

Two last details: the minimum height required is 1.40, and you must be 9 years old. Thank you for your understanding

From the youngest to the oldest, come and discover our treasure hunts. Use your wits and ingenuity to solve the riddles and receive your surprise! (children only).

Main services

  • Groups from 10 to 160 people
Show all services

Main services

  • Groups from 10 to 160 people


  • Toilets

Visiting time

  • Average duration of a group visit: 1h30m

Spoken language(s)

  • French
  • English

We like

The situation:
  • Close to a beach
  • Close to shops
  • On the outskirts of the city
Ideal for : Sports / Fun, Unplugged vacations, Zen / Well-being, for two, with friends, with children, for business, young people, retired people
Suitable for : move around, see the sea
(in €)
Adult rate Full rate

Adventure Course

Children's rate

Adventure trail

Classic treasure hunt: €4 / child or adult
La Mary Read digital treasure hunt: €15 for 1 or 2 people (€5/additional step)

Means of payment

  • Payment cards
  • Bank and postal cheques
  • Vacation vouchers
  • Species

Opening hours

Open from April to September:
- School vacations (zone B), daily
- Non-holidays: closed on Mondays and Tuesdays
July and August:
Site open 7/7

. Briefing translated on panels: English, Spanish, Italian, German, French and Breton.
. departure every 1/2 hour

Base de loisirs

Bertheaume Iroise Aventure

Rue de Bertheaume
29217 Plougonvelin
Getting there with Google Maps