Not a puzzle cache, but certainly a puzzling one.
Finding the cache is easy. Recognizing the tool you need to get to it may be a bit harder. The hand crafted tool is at the same coordinates as the cache, so be sure to look close...
Once you find the tool, there should be no problem getting to the log - no pulling, pushing, peeling, punching, or prying is necessary. Your grandma should be able to access the log, even with her crippling arthritis. If your solution requires any type of effort at all, you have not found the right tool. But if you feel you have to tear apart my cache to get to the log, please be sure to leave your name and address so I can send you a bill for my time and materials.
PLEASE replace everything as you found it - keep it fun for the next guys.