Road Trip Pic of the Day, 6/12: What is this?

If you know what today's picture is, you could be eligible to win a prize in the CNET Road Trip Picture of the Day contest.

If you know what this is, and where it is located, you could be eligible to win a prize in the CNET Road Trip Picture of the Day contest. Daniel Terdiman/CNET

Update (Tuesday, 8:55 p.m. PT): The answer to today's challenge -- which 70 people got -- is the western underside of the northern approach to the Golden Gate Bridge. Thanks to everyone who played, and to all, please come back for Wednesday's challenge.

Welcome to the Road Trip Picture of the Day contest. This is your chance to win some cool prizes as you test your skills at recognizing pictures.

If you followed my previous Picture of the Day challenges, you know that each day I'll be posting a new photograph from my various travels, and your job is to try to correctly identify it using any means at your disposal. Throughout Road Trip 2012, which will take me through California, Arizona, Nevada, and Oregon from June 15 through the end of July, there will be a new challenge each and every day. The last day of the contest is August 12, 2012.

There will be one winner each week, and one grand prize winner. Here's how it will work:

For the weekly prize, I'll pick a winner at random from among all those who correctly identified one of that week's daily challenges. You get one entry into this drawing for each correct entry you submitted that week.

For the grand prize, which is a complete set of GoPro camera gear, the winner will be the person who answers the most daily challenges correctly during the entire project. So there's definitely an incentive to play every day and to answer correctly as often as possible. Be warned: last year, the winner got 67 out of 70 possible correct answers, and several others got more than 60 right, so the competition for the grand prize will be stiff.

Given the constraints of the work I'll be doing on Road Trip, I have to minimize the complexity of the Picture of the Day challenge, so if you want to accumulate right answers and compete for the grand prize, you must use the same e-mail address and name each time. If you use a different name or e-mail address, your answers won't all be counted together.

For complete information and rules about the Picture of the Day challenge, please click here .

And now on to today's challenge.

If you know what this is, and where it's located, please send me an e-mail with both pieces of information (to daniel*dot*terdiman--at--cbs*dot*com) by 6 p.m. Pacific Time today.

Please note: in order to be considered, you must include the phrase "Picture of the Day challenge" in the subject line of your e-mail.

And please forgive me if you don't hear from me if you're not the winner. I get dozens of responses each day. Also, I've turned off comments because otherwise people will post the correct answers there. I hate to shut down discussion, but I want you to figure out the answer on your own.

Good luck today and throughout the summer.

The disclaimer: NO PURCHASE NECESSARY TO ENTER OR WIN. MUST BE A LEGAL RESIDENT OF ONE OF THE 50 UNITED STATES OR D.C., 18 YEARS OLD AND AGE OF MAJORITY OR OLDER IN STATE OF RESIDENCE AT DATE OF ENTRY INTO SWEEPSTAKES. VOID IN PUERTO RICO, ALL U.S. TERRITORIES AND POSSESSIONS AND WHERE PROHIBITED BY LAW. SWEEPSTAKES ENDS 11:59:59 PM PT ON 8/12/12. SEE OFFICIAL RULES FOR DETAILS.

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