Doraemon: Nobita and the Haunts of Evil(1982)

Nothing is impossible for Doraemon's magic pocket, much less when it comes to using their inventions to live the most amazing adventures. Is there a place where no man has gone before? The robot cat magic door leads to our friends at the center of Africa, just until Smokers Forest, a forest covered with a thick fog that prevents satellites take pictures. Nobita and his friends decide that if there is so much to discover, is certainly there.