Based on 15 extended trips to the Canadian far north over a five-year period, Arctic Dreams celebrates the mysteries of what documentarians fondly call "last frontiers." Such places are everywhere in danger of destruction in the interest of ever-elusive economic progress, but Lopez writes no jeremiads. Instead, he aims to foster a kind of learned understanding of wild places, in this case the vast, scarcely knowable northern landscape. Writing of the natural history of the Arctic and its inhabitants--narwhals, polar bears, beluga whales, musk oxen, and caribou among them--Lopez draws powerful lessons from the land and imparts them assuredly and gracefully. Arctic Dreams deservedly won a National Book Award in 1986 when it was first published.