A costumed crowd gathered below street level with the rubble and rats in the historic Seattle Underground at the invitation of the Atlas Obscura Society, to celebrate the launch of the hefty Atlas Obscura: An Explorer's Guide to the World's Hidden Wonders (Workman), part of a 12-city book tour. Pictured: (l.-r.) co-author and Atlas Obscura co-founder Dylan Thuras; Megan Roberts, director of events for Atlas Obscura; and Mark Pahlow, owner of Seattle's own novelty empire Archie McPhee.
