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:
Iceland Approaching Hekla. Image extracted from page of Icelandic Pictures drawn with pen and pencil with map and illustrations 'APPROACHING HEKLA' by HOWELL Frederick Original held and digitised by the British Library Copied from Image cropped greyscale levels adjusted object history credit line accession number British Library