The challenge for March is Repetition/Symmetry.  These two elements are closely linked and it is quite common to find things that are repetitive as well as symmetrical.  Having said that, it is also possible to find repetition without symmetry.

Your goal for this month's challenge is to submit an image or images that exemplify repetition, symmetry, or both.

Here are a few examples of symmetry:

Here are a few examples of repetition:

Here's a link to a page at Digital Photography School that features images with repetition and symmetry.

Link to A 10 Step Guide to Understanding and Utilizing Pattern.

I've also compiled some videos from YouTube that might help you with this challenge: