The following information obtained from UNAVCO's online DOI system:
(https://www.unavco.org/data/doi/search/search.html)

CVO GPS Network - CLCV-Cleetwood Cave P.S.
Start: 25-Aug-2010
End: 14-Nov-2022
Lisowski, Michael, 2012, CVO GPS Network - CLCV-Cleetwood Cave P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5FJ2DX6