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:
AMS Trivandrum. Topographic map of Trivandrum Kerala India area lib utexas edu Army Map Service US Govt work lib utexas edu PDUSGov Maps of Thiruvananthapuram district Old maps of Tamil Nadu Army Map Service Gulf of Mannar Maps of the Arabian Sea maps of India Old maps of Thiruvananthapuram in Thiruvananthapuram Old maps