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:
Permian sponge reef. en View of the Guadalupe Mountains Texas The top of the cliff was bould during the Permian by sponges and other reefbuilding organisms The flanks are the ancient slopes connecting the reef with the basinal depths own Hagakure other versions McKittrick Canyon Flora of Guadalupe Mountains National Park