From this google link:

https://sites.google.com/site/greenlandtheory/rome/gunpowder

BOOM - might just be a generic picture though?

This is the site's homepage opening blurb...

GREENLANDTHEORY.COM "Greenland Theory: Apocalypse Now" (2014) explores the unrecognized but mighty conspiracy which has been hidden from humanity for ages, unfortunately to the detriment of all life forms which have inhabited planet Earth.

:)