chrisa87, the section you’re referring to (as jekkyl has touched on) was first built before the Monkey was officially opened. It wasn’t finished though and word came of planned felling works further down the line.
All work was put on hold and then recommenced last year building up to the last Chase Trails Big Build day last Autumn.
The bedding-in / fettling period has then been hit by other environmental restrictions but it’s getting very close to being finished and will be worth the wait. Keep an eye on the official Chase Trails Facebook page (Chase Trails not Chase trails Follow the dog) if you want to get the news on it’s opening as it happens.