This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionAlleged Bigfoot footprint.jpg
This was a big print of something but I don't know what it was, it wasn't a shoe, (it had no man made patterns) but It doesn't look like a bear's either, it was about 12 inches long. (Big Foot ?? LOL) Iddle hour trail.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.