Claim: Chetro Ketl had some veneers (patterns may indicate a widespread style ) that are the result of highly skilled masons, and the doors often had sills of carefully ground flat stone.
Evidence: Aside from structural considerations, some veneers are the result of highly skilled masons working within well-developed craft traditions. Recurring veneer patterns may indicate a widespread style used during a particular period, or they may suggest the work of a specific social group or line of builders. Doors and vents often had sills of carefully ground flat stone slabs and lintels constructed from a row of thin wood beams.