Chicken Little (Canterbury) Traditional Cache

I used to be an arborist, and always felt bad doing the locals out of a bed for the night. For my first cache (or second attempt at a first), I'm going to make amends. 

Please be careful, as I'm sure it will become evident this isn't an overnight creation and repairs will take a significant amount of time, and if it is muggled it's more likely to be archived than replaced.

This is in a small park near my home. Families come here to play and picnic, which is a pleasant change in central Christchurch.