Paragon Archaeological Consultants for Castlewood Canyon State Park No description specified. 1-1 (1 Record) Documents A Class III Cultural Resource Inventory of Portions of the Proposed East Canyon Preservation Area, Douglas County, Colorado. (Castlwood Canyon State Park) (Shf# 97-01-010). >Preliminary Report of a Class III Cultural Resources Inventory on Portions of the East Canyon Preservation Area Douglas County, Colorado (Addendum 1)>Proposed Research Design East Castlewood Canyon Cultural Resource Inventory Douglas County, Colorado (Addendum 2) (1998)