On pid.geoscience.gov.au, navigate to the 'Field Site' PID collection page. Identify and state the primary purpose or description of this collection as presented on its landing page.
Navigate to 'https://pid.geoscience.gov.au/' Click on the 'Field Site' link (id: 38 or id: 20, preferring id: 38 as it's within the 'Register of LD APIs' section which seems more relevant to collections). Identify and extract the primary purpose or description of the 'Field Site' collection from the content of the landing page.
The agent successfully navigates to the 'Field Site' collection page. The agent identifies that the 'Field Site' collection is used to identify and provide access to 'geophysical field sites where data has been collected'.