We've had lots of rain, snow, and sleet recently - which is a bad recipe for these potholes to form and grow. Extreme varying temperatures also play a factor in the formation of potholes. So... how ...

These canyons weren’t carved by rivers, and these lakes may not be so ancient after all. Just north of the famous Gorge Amphitheatre are two enormous lake-filled canyons that appear to feed into the ...