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.
Kircher Mundus Subterraneus fire canals. Illustration of underground fire canals and the interior of Earth from Athanasius Kircher's Mundus Subterraneus Athanasius Kircher PDold File Kircherearthfires smaller version Mundus Subterraneus Earth in art
Page 2023 Free-images.com. All images are Public Domain