Here are the essential trails, rafting spots, attractions and more no visitor to Grand Central National Park should miss.

Research Grand Canyon landslide-dam and paleolake triggered by the Meteor Crater impact at 56 ka by a team from the ...

View from the Grand Canyon's South Rim onto Nankoweap Delta. Remnants of a past natural dam created by a landslide are visible on the far side of the Colorado River, just to the left of the ...