Gyro Gearloose, inventor of anything, does it again! He’s concocted Omnisolve, a serum that bores through any surface — and Scrooge McDuck thinks it can dig instant mine shafts! Alas, Scrooge “digs” a tunnel straight to the Earth’s core ... and risks destroying the world in Fantagraphics’ sixth complete, chronological book of Duck adventures by Don Rosa! Rosa, among the world’s most beloved modern cartoonists, launched his Barksian career in 1987. Famed for his prizewinning “Life and Times of Scrooge McDuck” (an Eisner Award winner), Rosa wrote and drew two decades’ worth of ripping Duck tales! Stories in this latest volume also include “Hearts of the Yukon” (an untold tale of Scrooge, Glittering Goldie, and the Klondike Mounted Police), “The Lost Charts of Columbus” (featuring the evil Azure Blue), and the Beagle Boys face bug-size battlers in “The Incredible Shrinking Tightwad!” Presented with brilliant color and a treasure trove of Rosa’s cover art and behind-the-scenes factoids, these Duckburg epics are back in a definitive, comprehensive edition for posterity!