The cache is not at the posted coordinates but it is reasonably walkable from the area where the Adventure Lab takes place.
This is a bonus cache for completing the “Dark Onyx” Adventure Lab.
Click here to watch the video you need to begin the Adventure Lab and then be taken directly to the Adventure lab
Or you can scan this QR code to start the lab manually. You will need to watch the video later.
Once you complete the five locations of the Adventure Lab, you will have information to enter into Certitude to get the final coordinates for this mystery cache.
You can validate your puzzle solution with certitude.
Alternate Solution method for non-smart phone users
Note: If your answer is correct the Certitude says you have the wrong answer but also says Congratulations and gives you the coordinates for the final. I was reluctant to mess around with turning the existing Certitude for the AL to have multiple stage style answers so used the "not right but close" mechanism. Look carefully.
Solve the below puzzle. What is the full word for the next item in this series?
S, Mi, H, Da, W, F, Mo, Y, De, C
You can validate your puzzle solution with certitude.