Thanks! I talked with my city's government officials and they were actually excited that I wanted to build on their land. This is part of only the first 40 meters of trail we've built so far (and, obviously, the ladder isn't finished yet)
Will be a good trail then if that's anything to go by! You're lucky to have such an understanding landowner. Our's doesn't mind us building a trail, although he just stands and watches us, and if we build anything remotely big he just say it's dangerous and stops us. Oh well, at least we've got somewhere. Keep up the good work dude, let me know when you've finished/got a video!