"Tom, that strange glowing gas is fantastic--disintegrates everything it touches! What do you think it is?" Fascinated by the amazing report from a pilot who crash landed in the African jungle, Tom Swift replies: "Sounds like antiprotons rampaging, Craig. Such a phenomenon is unknown on Earth. Let's investigate that taboo mountain!" But mysterious enemies have followed Craig Benson from exotic Borukundi to Shopton, enemies who will stop at nothing to prevent Tom from using his new invention the terrasphere to probe the scientifically inexplicable secret of forbidden Mount Goaba. Threatened by deadly radiation, fierce wildlife, hostile villagers, and the maniacal General Boondah, Tom struggles to conquer this unknown quirk of nature--only to wind up at nature's mercy deep within the earth! By the author of the YOUNG & SMART series.
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