This bonus geocache is NOT at the posted coordinates.
First, you will need the Adventure Lab app available from the app store on your smart phone.
You will then need to complete the "Denver West Sculptures" Adventure Lab in order to get the final coordinates and instructions on how to access the physical container.
https://adventurelab.page.link/TsCb
You will have 5 stops to complete and along the way you will receive missing parts of the coordinates. You may retrieve the numbers at anytime after you have completed the tour by viewing the journal of the "Denver West Sculptures" Adventure Lab series. It will be listed after each location is completed.
Find the cache at the folllowing coordinates
N 39° 44.8AB W 105° 09.CDE