Road Trip pic of the day, 7/30: What is this?

Do you know what this is? If so, you could win a prize in the Road Trip picture of the day challenge.

(Credit: Daniel Terdiman/CNET)

If you've followed the Road Trip picture of the day challenges, you may have noticed that a number of them have featured big rock formations. And why not? When you drive more than 5,000 miles through states like Colorado, Utah, Idaho, Montana, and Wyoming, as I did during Road Trip 2009, you see some of the most beautiful things nature can throw at you.

But this is the penultimate daily challenge, so I figured, why not dip into the well once more and task you with identifying one last wondrous piece of nature?

To that end, if you are the first to tell me (by e-mail to daniel--dot--terdiman--at--cnet--dot--com) what this is called, and where it is, you'll win a prize.

After tomorrow, however, there won't be any more daily challenges. Until Road Trip 2010, that is.

So good luck.

Click here for the entire Road Trip 2009 package.

[nick_spong]

Verde Canyon Railroad
-NS

[robycease]

canyon rr

[richmmc]

Promontory Summit where the railroad met in 1869?

[Johnfinn100]

It has been years since we were there, i would have to say the Royal Gorge Colo.
Since i don't think Dan got to Arizona.

[maxi-truck]

price river canyon, utah. near soldier summit

[keelhauler1]

Royal Gorge near Parkdale, CO

[michaelseibert]

It appears to be East side of Glenwood Canyon outside of Glenwood Springs, CO

[michaelseibert]

Glenwood Canyon, Colorado (east side of the canyon it appears). Just outside Glenwood Springs, CO

[KenJBaker]

As a Brit. visiting ths site, I would like a list of all the solutions to te road trip picture of the day, as I'm hoping to holiday i America next year and some of the places could become part of my travel plans