Yes, this is a tree climbing cache. It's not too bad. I'm in my mid-60's and 5'11' and I was able to do it without assistance. However, if you have a helper nearby or bring something for a boost that might make your conquest a bit easier. Once in the tree you will have a few items to fuss with as you expose the log. Pockets or a fanny pack might help. But, before you get to the subject tree you will learn a little tidbit about Irvine Regional Park.
I posted coords for parking lot L as a good place to park. To get started, go to the posted coords and enter the answer to this question into Certitude - month spelled out completely and 4-digit year with ALL CAPS NO SPACES.
WHEN DID JAMES IRVINE II DONATE HIS PRIVATE PICNIC GROUNDS TO THE PUBLIC TO ESTABLISH THIS OLDEST OF COUNTY PARKS IN CALIFORNIA?
Now you can make a beeline for the cache. Enjoy the hunt!
You can validate your puzzle solution with
certitude.