Welcome to the dike. Cache is not a posted coords but within a mile. Answer the following questions to get the final coords. This is a busy spot with hikers, bikers & bears so PLEASE be aware of your surrounding and make some noise so you don't startle a critter. At posted coords there are signs on both sides.
N 49 16.ABC
A = On the Green Endangered Species sign how many critter pics are there times 3
B = Same sign - number of letters in city name
C = DeBoville Slough sign - Number of letters in the 1st name of the Yellow Throat
ABC sum check = 24
W 122 43.DEF
D = DeBoville Slough sign - number Coyotes in pic times 3
E = DeBoville Slough sign - Number of Wood Ducks in pic
F = DeBoville Slough sign - Number of letters in the 5th word under Great Blue Heron pic
DEF sum check = 13
Bring a pen, be nice to the enviroment & watch out for wildlife