Introduction
This small series has been placed to assist cachers trying to complete their Difficulty/Terrain grid. Terrain 4.5 is not a common rating.
All these caches require a ladder unless you are a particularly talented climber. This means that they are quite a distance off the ground, so please have safety in mind, ensure your ladder is in good condition, and don't do them by yourself.
None of the caches are at their original co-ordinates, and I would be be fairly careful going there although it is an old Racecourse (on most maps), it in now a Rifle Range.
The Tree

Clues:
ACROSS
3. an extension ladder fitted to rotating platform on top of a fire truck.
4. used in siege warfare to assist in climbing walls and crossing moats.
6. portable steps down the side of a ship for boarding.
7. two side members joined by several rungs; affixed to structure with no moving parts.
9. a ladder that looks like a drainpipe but can be deployed instantly when required.
10. pulled down from the ceiling to allow access to a loft.
11. an "A-Frame"-style ladder with a telescoping center section.
13. a rigid ladder with a hook at the top to grip a windowsill; used by firefighters.
14. a ladder used by swimmers to get out of the water, often on boats.
DOWN
1. a type of boarding ladder for divers which has a single central rail and is open at the sides to allow the diver to climb the ladder while wearing swimfins
2. a three legged step ladder with the third leg made so that it can be inserted between tree branches for fruit picking.
5. a rigid ladder with a large hook at the top to grip the ridge of a pitched roof.
8. a step ladder with a large platform area and a top handrail for the user to hold while working on the platform.
12. a self-supporting portable ladder hinged in the middle to form an inverted V, with stays to keep the two halves at a fixed angle.
Your tree can be found at:
South 36 0A.BCD East 146 2W.XYZ
Have fun climbing