Later Ladder Traditional Cache

Enjoy the nearby park and then come find this cache.  It is near what looks to be someone's tree fort.  I really wanted to place my cache there, but it would surely be muggled!

A ladder is a vertical or inclined set of rungs or steps. There are two types: rigid ladders that can be leaned against a vertical surface such as a wall, and rope ladders that are hung from the top. The vertical members of a rigid ladder are called stringers or rails (US) or stiles (UK). Rigid ladders are usually portable, but some types are permanently fixed to buildings. They are commonly made of metal, wood, or fibreglass, but they have been known to be made of tough plastic.