"Extreme Travel": Living on A Razor's Edge

For me, living on a razor's edge when I'm traveling means making sure I can get a close shave in the morning.  For writer Neil Shea and photographer Stephen Alvarez, it meant risking life and limb navigating their way through the maze of spiky stone towers in Madagascar's Tsingy de Bemaraha National Park and Reserve.  For a great armchair travel adventure, read their article "Living on A Razor's Edge:  Madagascar's Labyrinth of Stone" in the November 2009 issue of National Geographic.