Today’s theme for the 2009 Challenge is CONCRETE.

Modern buildings could not exist without concrete. Get out there and find some near you!

"tunnel" by thespeak

Once you’re ready to submit your work to Flickr, you’ve got to do two important things. First, make sure you tag your photos correctly; “2009challenge″. Also, if you haven’t already, join the PhotoChallenge group on Flickr. Then, submit each day’s photo to the group’s pool.

"live can be too concrete some times..." by onkel_wart

"homeland security" by bhikku