By Mathew Van Dinter.
Well, there’s a giant drilling machine, a subterranean lost world, dinosaurs, troglodytes, Napoleon’s Grand Imperial Army, and a love triangle.
So, it’s basically Jules Verne meets Jane Austin… with dinosaurs.
Note: This title has two redundant entries - https://archivebinge.com/comic/584 and https://archivebinge.com/comic/603 .