The cache container IS at marked coordinates, though you will have to make some observations to find the combination.
You are looking for a group of items that are the same but different. There are 4 different subsets of this group. Identify the subsets, and count the number of each to get the numbers of the combination.
The largest number is the first number of the combination. The smallest number is not last.
All items to be counted are within 20' of the cache container, 3-6' off the ground
Sum check 16
ANSWER IN HINT
**The most direct route to the cache is perilous. Look for paths behind the pine, near the creek.