The cache is at the posted coordinates and placed on private property with the owner's approval.
Once at the location you will find the container as it is very visable but there is a trick to opening it and good planning is needed to retrieve the log. In preparation you will have to bring some things in order to be able to sign the log book and I will check to see if you do. I would hazard a guess that this cannot be done alone but you are free to try.
You may need some of the following: duct tape, a brainyack partner, common sense, change of clothes, 1 liter of water, rubber boots, raincoat, wadders, ladder, cipher decoder, sense of humor, caching/muggle partner, smartphone, tweezers and a sense of humour. I'm sure a geocacher will have all or most of these items in their geomobile.
Please enjoy this sort of a field puzzle and do not break anything so the next cacher can also enjoy the fun. No spoiler photos with your log as these will be deleted.
Hint if you can read this you are half way to knowing one element of the field puzzle: 90 53 7 19 15 71 31 1 8 *57 *63
Take only the first half of your solution for the numbers with the *