Forgotten Kingdoms in Sumatra / by Schnitger, F. M., author 438296

“…In addition to its fathomless jungles, immense forests, and lonely hillsides, the island of Sumatra possesses the monuments and traditions of some of the most ancient cultures of South-East Asia. …”

SHOCK WAVE : A NOVEL / by Cussler, Clive, author 191823

“…A few pitiful survivors wash up on a deserted island. Among them are Betsy Fletcher and Jess Dorsett, who discover an immense supply of exquisite diamonds... …”