Take your domino image and head to your Station #3 thread. Post a domino in the thread to begin. You must then post another domino exactly TEN seconds from your post. If you miss the mark, start over.

You must successfully last for one minute, meaning just six posts in a row spread exactly 10 seconds apart.

Once you are SURE you've successfully completed this, post the phrase "tumbling down" with no space in all lowercase. This will filter to your next set of puzzle pieces.