Includes: Indoors, Outdoors, Adventurous, Team building and friendship

Activity time:
1 meeting


Print this activity pack

Build until it topples

Like playing with giant building blocks - but with a person standing on top of your crate tower. How high will you manage to build it?


Crate-stacking challenges a team to build a tower of crates with a member on top. The attempt ends when the tower topples.

To take girls crate-stacking, you will need to find a reputable local provider with qualified instructors.

Planning checklist

Safety notes

You can verify the quality of a provider by checking it has one of the following endorsements: AALA, Adventuremark or LotC Quality Badge for Adventure. These endorsements are not applicable in Northern Ireland, where you should ask your local Outdoor Activities Adviser to recommend an approved provider.

The activity instructor must hold one of the following:

  • Mountain Training UK (MTUK) Rock Climbing Instructor (RCI) or higher with training and familiarisation for the activity.
  • High-ropes specific training and assessment run or moderated by an MIA (Mountain Instructor Award).
  • European Ropes Course Association (ERCA) Instructor or higher.

If you are unsure, or the instructor holds alternative qualifications, please consult your Outdoor Activities Adviser or contact [email protected].

The instructor must ensure:

  • helmets are worn
  • all participants wear a chest harness in conjunction with a sit harness, OR use a full body harness
  • participants on the crates must be belayed using the ground anchors as a ‘semi-direct’ belay, ie the belayer must be connected in the system to back up the ground anchor
  • participants must be given a safety briefing about the dangers of falling crates. This must be repeated throughout the session as necessary. Crates may be stacked to a maximum of 20 high.
Section Number of girls per adult
Rainbows 5
Brownies 8
Guides 12

How many adults are needed?

Use this calculator to find out the ratio of girls to adults that is required for this activity

2 adults needed


  • An Activity Information and Consent form is required to participate in this activity - PDF | Word
  • A Risk Assessment form is required for this activity - PDF

Remember - you can use one consent form for multiple activities

Girlguiding activity centres for crate-stacking

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Blackland Farm

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Waddow Hall

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