Around the globe, the land still bears the scars of the long-ago past. Retreating glaciers carved caves and ravines in their wakes. Landslides spawned tapestries of pits and peaks. Wind and rain continue to nibble at rocks, sculpting strange geological formations and causing large chunks of the ground to buckle and bend. These 17 places show that some of the planet’s most blemished areas are also its most beautiful.