This should be a easy puzzle and a easy climb. I had to make this a look it up puzzle due to changes in the park. I also added a hint to keep it easy.
N42 A.B W83 C.D
A= OHIO BUCKEYE ×2
B= AMERICAN HORNBEAM + KENTUCKY COFFEETREE + SUGAR MAPLE + BLACK CHERRY + QUAKING ASPEN
C= BLACK BIRCH
D= PIN CHERRY × SLIPPERY ELM + RED MAPLE + RED PINE
I tried to add the new checker with no luck. Check sum of all north digits is 26 and west is 18.