Bomba sets out on a dangerous journey to find the medicine man who can tell him the secret of his origins." -- "Searching for his long-lost parents, fourteen-year-old Bomba embarks on a perilous journey to a distant volcano." -- "Bomba travels many miles through the jungle, with many encounters with wild beasts and hostile natives. At last he reaches the Andes and presently trails the old man of the burning mountain to his caves of fire and learns more concerning himself. Weird adventures underground.
Roy Rockwood was a house pseudonym used by the Stratemeyer Syndicate for boy's adventure books. The name is most well-remembered for the Bomba the Jungle Boy and Great Marvel series.
I actually liked this quite a lot. Fast moving. Definitely for younger readers in general, and I'm sure I would have liked it a lot more when I was a kid.
Bomba is kind of a mixture of Tarzan and Mowgli. He's an orphaned boy who lives in the jungle. In this case he has to rescue some white travelers from a band of headhunters and other dangers, and at the same time try to investigate his heritage to try and discover who his parents were.
I can see why I loved these as a kid - it is one exciting adventure after another! Every chapter ends with an exclamation point! Because Bomba is facing headhunters, venomous snakes, jaguars, volcanoes, earthquakes, mad witch doctors et al. He always triumphs.