A visual and anecdotal exploration of the curious worlds hidden beneath our feet, including ancient cities, salt mine cathedrals, underground amusement parks, and more. From bone-filled catacombs to sculpted salt churches to hand-carved cave complexes large enough to house 20,000 people, Underground Worlds is packed with more than 50 unusual destinations that take some digging to find. Award-winning travel writer David Farley revels in the unexpected, whether it is a cave city in China which houses one of the world's largest collections of Buddhist art or an old salt mine converted into a theme park in Romania. Stunning photos help readers see places they could not even imagine, such as a three-story underground train station in Taiwan that is home to the a 4,500-panel "Dome of Light" that is the largest glasswork on Earth, as well as secret spaces, such as an ornate temple built beneath a suburban home in Italy. Throughout the fascinating text are themed entries of underground systems such as the 2,500-year-old water tunnels of Kish Qanat in Iran or engineering marvels like the New York City steam tunnels.

A round-the-world adventure exploring curious worlds hidden beneath our feet, from underground burrows to ancient cities and shopping malls. Fourth book in the successful Walk this World series. This stunning lift-the-flap book takes the reader on a journey all around the globe and deep underground. There they'll find amazing hidden worlds, teeming with life - from prairie dog towns and ant cities, to opal mines and treasure-filled tombs. Each spread is bursting with details and has new surprises to discover in the cutaway artwork and under the flaps. With so much to see and explore, this is a perfect gift for young adventurers.

Descend -- Across Paris -- The intraterrestrials -- The ochre miners -- The burrowers -- Lost -- The hidden bison -- The dark zone -- Humberto.

A unique look into a side of MMA that only a few know and only Genia can give. —Chris Palmquist, partner, MixedMartialArts.com Out Freakin' Cold Forget pay-per-view. Forget championship belts or sanctioning bodies. This is Mixed Martial Arts combat in its purest, rawest form. Follow Jim Genia into the illicit world of vale tudo (anything goes). Locations are always changing and known only to a few, from run-down, shuttered gyms to speakeasy combat cages. The ruthless damage exacted on the human body leaves a trail of hard-won scars. The fighters battle for everything but a payday, risking it all for honor and pride. In a world of conformity, these are men of action who struggle against rules, selling out, and their own demons. Jim Genia offers on-the-mat access to a brutal arena and the men who spill their blood there. "Captures the good, the bad, and the ugly." —Matthew Polly, author of American Shaolin "It's a raw, wild scene and Genia takes you in his pocket for the ride." —Sam Sheridan, author of A Fighter's Heart 16 Pages of No-Holds-Barred Photos

The legends of a fabled land of the lost have floated for centuries around the bazaars of North Africa and the sand-surrounded oases of the vast Sahara. They tell of treasure caravans that have never returned, of weird monsters forgotten by time, of savage peoples surviving out of antiquity. Eric Carstairs had heard these tales but until he met Professor Potter he did not really believe them. But the famous palaeontologist had the location of the entrance to the Underground World pinned down, and wanted only a man of courage to fly him there. Carstairs and Potter took the chance - and pierced the pit to Zanthodon, a world within the world, where cavemen and cave-beasts roamed side by side with dinosaur-monsters of millions of years ago.

There are over one billion organisms in a pinch of soil, yet we know much more about deep space than about the universe below. In Tales from the Underground, Cornell ecologist David Wolfe takes us on a tour through current scientific knowledge of the subterranean world. We follow the progress of discovery from Charles Darwin's experiments with earthworms, to Lewis and Clark's first encounter with prairie dogs, to the use of new genetic tools that are revealing an astonishingly rich ecosystem beneath our feet. Wolfe plunges us deep into the earth's rocky crust, where life may have begun-a world devoid of oxygen and light but safe from asteroid bombardment. Primitive microbes found there are turning our notion of the evolutionary tree of life on its head: amazingly, they represent perhaps a full third of earth's genetic diversity. As Wolfe explains, creatures of the soil can work for us, by providing important pharmaceuticals and recycling the essential elements of life, or against us, by spreading disease and contributing to global climate change. The future of our species may well depend on how we manage our living soil resources. Tales from the Underground will forever alter our appreciation of the natural world around-and beneath-us.