This is a drawing I did on 11×17” Bristol paper, which depicts the ruins of a lost civilization deep in the rainforests of Central Africa’s Congo Basin. The civilization in question is my fictional invention, of course, but I imagine it would have been built ~3,000 years ago by a Bantu-speaking people who had commercial and cultural links with the ancient Egyptians and Kushites.
By the way, that big gemstone atop the obelisk near the upper left corner is supposed to be a really big diamond.