Located in Big Bone Lick State Park. Placed with permission of KY State parks, permit # 19104BBLSHS. For more info and details on this cache - go to https://coord.info/GC8719T
From this sign has many panels. You are looking for the panels that show the many intervals of glaciers and warming periods in North America
At the posted coordinates you will find an informational sign. Clues from the sign will give you the final coordinates of the geocache.
The final is at:
N38 52.ABC W84 44.7YZ
Illinion Glacial Advance: Climate about RA degrees cooler than present.
2Z,000 years ago - The time between the Altonian advance and Farmdalisn retreat
12,Y00 year ago the Farmdalian Retreat
"yarmouthian" Interglcaial Climate much like present..... P degrees cooler
B=P/3 C=P-B
Sum check A+B+C= 17 Y+Z= 13
NOTE: the difficulty is the puzzle not the final