Back to the present day, Jane ponders over the idea of expensive gifts, particularly jewelry, prompting Terk to remind her of the time Tarzan tried to get her a diamond. Tarzan had led two men, Johannes Niels and Merkus to a nearby volcano containing a diamond mine and in return, they would give him one of the diamonds to give to Jane, only for them to turn on him once inside, wanting to take all the diamonds for themselves. The volcano then erupted with Tarzan, Jane, and Professor Porter trapped inside, though they managed to escape before the lava flows reached them.