When the warm days do arrive, though, the taiga blooms, and for a few short months it can seem almost welcoming. It is then that man can see most clearly into this hidden world–not on land, for the taiga can swallow whole armies of explorers, but from the air. Siberia is the source of most of Russia’s oil and mineral resources, and, over the years, even its most distant parts have been overflown by oil prospectors and surveyors on their way to backwoods camps where the work of extracting wealth is carried on.