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Unique Filming Location

Available to hire for filming with flexible spaces and onsite support. 

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Make A Day Of It

Make the most of all we have to offer, experience multiple activities on the same day

High Ropes

Take on a high ropes adventure at our challenging course...

Rush

The ultimate weekend challenge! Conquer 6km of award-winning obstacles and...

Mud Tribe

Gather your tribe! Join the fun at Mud Tribe, a...

Training
Nuclear Fit – May 2026

Push your limits with Nuclear Fit, a unique outdoor fitness...

Secret Nuclear Bunker Tour

Discover a great value day out in Essex to the...

Easter 2K Obstacle Run

Hop along for some cracking Easter fun for the whole...

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£24.00 Per Child
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Zip Trek

Discover the ultimate treetop adventure at our epic zipwire course. Soar through the air on a series of breathtaking zipwires as you navigate a challenging 500-metre course through the canopy, providing an unforgettable outdoor activity for all ages. It’s the perfect zip line adventure for families and groups of all skill levels.

Zip TREK

Age 8+

Approx. 30 Minutes

Get ready to soar through the trees on our Zip Trek Adventure — a high-speed journey of zip lines, rope crossings, and elevated platforms that will leave you grinning from ear to ear.

This thrilling zip line adventure takes you from tree to tree along a series of zip wires and suspended obstacles. You’ll climb, balance, and glide your way across the forest canopy -feeling the wind, conquering the heights, and loving every second of this tree top adventure.

Whether you’re new to zip lining or a total adrenaline junkie, Zip Trek is the perfect mix of challenge and fun. 

What's Included
  • Duration - 1 lap of course (approx. 30 minutes).
  • Open-air woodland setting through trees and water.
  • 13 zip wires over a 500m zip lining course.
  • Two 70m+ long zip wires.

£15.00 Per Person

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BIG DROP

Age 8+

1 Drop

Take on the Big Drop at Nuclear High Ropes! It’s one giant leap for you or your children – one giant sense of achievement for all!
 
Will you take the plunge…?
Do you dare…?
Are you ready to put your courage to the test…?
 
If so, simply add the Big Drop to your High Ropes booking at checkout for only an extra £6 per person and test your nerve at the Nuclear High Ropes’ Big Drop!
What's Included
  • Equipment at the highest of safety standards.
  • Safety briefing ahead of jump.
  • 50ft / 13m free fall drop.
  • Outdoor, treetop setting.
£6 per person

Available as an add-on to high Ropes & Zip Trek

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Features
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What to expect

Zip lines up to 9 metres high for an unforgettable adrenaline rush.

Full safety briefing and equipment provided before your adventure begins.

Friendly, experienced instructors guiding and supporting you throughout.

Optional 50ft Big Drop add-on for those who dare to take the plunge!

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Facilities

Beautiful open-air woodland setting

Free on-site parking with plenty of space

Indoor and outdoor viewing areas for spectators

Hot and cold drinks plus light snacks available

Comfortable seating areas to relax and watch the action

Free Wi-Fi available throughout

Toilets on site

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What to wear

Flat, closed-toe shoes – trainers are ideal (no Sandals or crocs)

Comfortable clothing you can move in

Thin layers – you’ll warm up as you climb!

Waterproofs if the weather looks wet

Gloves (optional) for extra grip and comfort

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Supervision

Under 18s must be supervised on the course by a participating adult (18+).

One adult can supervise up to 6 under 18s on the Zip Trek course.

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About You

Suitable for ages 8+

Participants must be at least 1.2m tall

Maximum weight limit 120kg

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Safety

Our continuous belay system keeps you secure at all times

Trained, qualified instructors on hand to guide you

Practical induction and safety briefing before you climb

TOP 10 FAQ's

What should I wear?
Wear closed toe, flat, sturdy shoes, trainers are ideal. Remove all jewellery. Glasses will need to be held on with a retainer, if you don’t have one you can borrow one for a returnable deposit. Thin layers (t-shirt, long sleeve top, fleece etc) are best – you can aways take a layer off or add another. Bring a waterproof with you. Although some of our courses are amongst the trees there’s lots in the open air too. You’ll get warmer as you take on our aerial ropes, obstacles & challenges.
More Info...
Is there an instructor or are we on our own?
Your journey will start with and safety brief with one of our trained instructing team. Once on the course your safety will be monitored by the team from the ground. In the event that you need support on the course we can access the course if necessary.
Can adults and children go on the course together?
All participants follow the same journey and all members of your group will stay together throughout.
Can I do more than one activity in a day?
We have a range of activities available and offer 15% Off any bookings that include 2 or more Nuclear Adventure activities
Do I need to complete a waiver in advance?
Yes, all participants will need to complete our Risk Acknowledgment and Disclaimer before you arrive. The lead booker will receive a link to these with their confirmation email and will be asked to forward them to everyone participating
How long before our session do we need to arrive?
Your session will start at the time you have booked, we ask that all participants are on site a minimum of 10 minutes before your session time to sign in and use the facilities.
What happens if the weather is bad on the day of my activity?
Nuclear Adventures is an all-weather outdoor experience. We stay open in most conditions, but extreme weather may affect your booking.
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Do I have to remain on site?
A responsible adult (over 18) has to remain onsite at Nuclear Adventures at all times while children under 18 take part in our sessions. Responsible adults must be in visual contact with children under 18 at all times to support them from the ground and supervise behaviour. An adult must sign waivers for any youths aged 18.
Do I need to participate with my children?
All children must be accompanied by a paying, participating adult when taking part in our Zip Trek experience; this is so that you can supervise their behaviour and ensure everyone is following the safety rules for the activity. 1 adult can supervise up to 6 under 18 year olds.
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How to find Nuclear Adventures

Find us

How to find us

We are based on top of the biggest & deepest cold war bunker open to the public in SE England: Kelvedon Hatch Secret Nuclear Bunker, Ongar Road, Kelvedon Hatch, Brentwood, Essex CM15 0LA

Download the what3words app and navigate to: fight.inspector.beams. This will bring you directly to Nuclear Adventures.

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