The cache is NOT at the posted coordinates.
This is a bonus cache for completing the Adventure Lab: The Long Haul (401 WEST).
To find the actual coordinates for this cache, you will need to complete the Adventure Lab, The Long Haul (401 WEST). Navigate to each of the five locations in the Adventure Lab and correctly answer a question at each location. Partial coordinates will be revealed in each stage in the journal entries of the Adventure Lab.