A structure that has severely deteriorated, but still retains a significant amount of its historical integrity. Unfortunately, no efforts are being made to preserve what remains.
No material evidence of original structure exists.
Structure that deteriorated to the point that preservation efforts would be ineffective.
A recreation of what was there historically for interpretive purposes
A structure that has been given a modern day function.
The structure has been altered so that it depicts a particular period of time in its history, while removing evidence of other periods.
An archaeological feature that manifests as a slight depression in the ground.
The structure is being maintained in its current state and repairs are made to prevent further deterioration.