While I was on holiday at Center Parcs I did my ultimate adventure. I saw a sign post that said tree trekking in green writing. I asked my dad if I could have a go and he said yes. The instructor said put on a safety helmet and some straps around your shoulders and waist. Off I went on my very exciting challenge. I went first because my brother Tom was too scared. I started to climb high through the forest trees by crawling, swinging from branches and balancing across many obstacles and at the very end I went on the zip wire.