A man that's been missing for over a week has been found dead in his truck after it apparently went over a cliff on a Colorado Pass and plunged about 100 feet.

Authorities still aren't sure when the accident occurred or what caused it, but they have determined that David was heading toward Crested Butte on Highway 133 when it veered off the right side of the road that didn't have any guard rails, slid down the embankment, and hit some trees.

Hoffman was driving a 2006 Toyota Tundra which was found down the embankment about six miles from Paonia State Park.

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This is so sad and scary because we've driven on these kinds of roads over the passes and through the mountains where, if you lose your concentration for a split second, it could be disastrous and ultimately deadly as many of these narrow and curvy roads don't have guard rails.

Some of the most dangerous roads in Colorado, and other mountainous states, are also the most scenic and often are very tempting to start to drift and stare at the scenery.

Here are some good reminders when driving in the higher elevations and on these narrow roads, especially during this time of year when the weather can change in the blink of an eye.

PHOTOS: Worst Northern Colorado Crashes In Last 5 Years

5 Most Dangerous Intersections in Fort Collins

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