Alien Head February 4th

It’s going down on Saturday February 4th! The Alien Head comp will feature 25 boulders and runs from 13:00-18:00. No pre-registration required, just show up on February 4th and enjoy the boulders. Afterwards we’ll reward prizes to the winners and there’s plenty of time to have some nice food and drinks together. Don’t forget to bring your friends and family!

Friday night workshop night!

Every other Friday 20:00 interesting workshops with varying theme’s, check the schedule and find your workshop!

  •  Sign up online, at the bar or give us a call!
  • Cost: 15,-


Workshop Target Audience Brief Description When?
LEF! Everyone Defeat sketchiness, learn to trust your feet, dare to take uncertain steps. In this workshop, we will work on stress-free bouldering at your limit. 25
How to train: Off the wall Up to 6b Learn to train independently and warm up on the Arena (ground exercises). 22
How to train: On the Wall 6b and above Ever wondered how to train on the spray wall? Or do you want to learn how to use the campus board and Tensionboard for systematic training? Then this workshop is for you! 29
Flash versus project Purple+ Which mode helps you project better and which mode helps you with better onsighting? We practice both. 27
Dynamic Moves Purple+ Dynamic movement on the wall. Deadpoint, dyno, triple dyno. Timing, coordination, spatial orientation. The why and how of executing them. 24
Improve your skillset Orange / Purple Tips and tricks. Flagging, cycling, mantling, toehook, etc. A good Connection to Boulder Basics. 29


GRIP OPEN 2022 Zaterdag 12 November

GRIP OPEN 2022! Join our biggest comp of the year on Saturday November 12th. A fun day filled with crazy boulders, nice food, good music and a big final!

  • Qualification round features 35 boulders starting at grade 5a.
  • The final features 4 boulders for women and men. The top 6 climbers qualify and will have only 4 minutes to reach the top of each boulder!
  • Please register online, cost 25,- for competing and a limited GRIP OPEN 2022 T-shirt. Fill in the form below to register.
  • Prizes will be rewarded afterwards to the winners afterwards, including crashpads and more!

Hope to see everyone there! Please don’t forget to invite your friends and family.


    Alien Head July 9th

    Join the comp on Saturday July 9th! A day with 25 spectacular boulders, nice food and drinks with your favorite boulders friends. What’s not to like? Pre registration isn’t required, just show up on July 9th and join the fun. Comp runs from 13:00-18:00, so plenty time to top those boulders. Oh and don’t forget to bring your friends and family to the gym!

    GRIP BDAY PARTY Saturday May 14th!

    Our 6th Bday party is coming up! Join the competition with your friends in our team competition. Teams consist of 4-6 people, no pre-registration needed. In the spirit of the Olympics participating is more important then winning, but there will be some prizes rewarded to the winners and of course the best dressed team.
    If you’re struggling to form a team, just show up and try to form a team on the spot or join the party instead.
    Gym is closed for bouldering from 18:00, because then the big party will start! DJ line-up is to be announced soon and entry is free for the party!

    Corona measures: QR code

    New national measures for sports locations will apply from Saturday 6 November.

    All guests aged 18 and over must present a valid corona ticket (‘coronatoegangsbewijs’) upon entry at each visit.

    This can be done in the form of a digital QR code via the CoronaCheck app or printed on paper via Both in combination with a valid ID. This QR code can be a vaccination certificate, recovery certificate or a negative test certificate. The new access rules do not apply to children up to and including 17 years of age.

    GRIP OPEN 2021

    On Saturday, November 13th, we are hosting GRIP OPEN 2021! Make sure you have time to join this awesome competition. We’re spicing things up with nice music, good food, drinks and DJ’s.

    12:00 – 17:00: GRIP OPEN 2021
    17:00 – 19:00: food, drinks & prizes

    Online registration is mandatory to make sure it’s not overcrowded and to print your GRIP OPEN T-shirt! Click the ticket link and make your booking for free.

    Ticket + t-shirt (from 14 years old): € 25

    The event consists of 41 boulders from 5a to 7c+. Special prizes can be won, such as (really nice) crashpads.

    As the name already suggests: the competition is open for anyone, so don’t be afraid to join because it’s a competition!

    Scoring system:
    The 1000-points system is used for the event. Each Top is worth 1000 points, which we will divide by the number of people that climbed that particular boulder. You may use as many attempts as you need to Top a boulder.