The sheer walls of Black Canyon of the Gunnison National Park are as bad as they come. Complex networks of plutonic intrusions reflect the last remnants of light in the deep chasm as it gives way to darkness. Explorers, trailblazers, and railroad crews alike have each deserted their mission at the mere site of the canyon walls. Dropping up to 240 feet per mile, one explorer went so far to describe it as “the most rugged canyon in the world.” If not even light wants to pick a fight with this bad mama, why would you?