This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Report on the birds' nest caves and industry of British North Borneo with special reference to the Gomantong Caves BHL. Report on the birds' nest caves and industry of British North Borneo with special reference to the Gomantong Caves Table of Contents biodiversitylibrary org title Chasen Frederick Public domain The BHL