Today, I am looking for silent movies about Africa.
The background is this picture, from the Tarzan comic strip, of the year 1934, I think:

A very similar drawing, we find in Flash Gordon, and, many years later,
on the cover of the AD&D Player's handbook by TSR.
Now, I think I know that the inspiration for that picture from a silent movie. Some adventure flick, probably German.
Does this one ring a bell for anyone of you?
Thanks a lot,
Rafe