In paleontology you see this a lot, where two unrelated species will develop the same form (convergance)- the idea of form following function. Today wee are influenced by television, radio, newspapers, magazines books and, ah yes, other people's art - even the telephone was two hours away from being patented by a guy named Gray. So if you set up a scene in Bryce then later see a similar scene somewhere else perhaps it's just an idea who's time has come combined with the law of averages - bound to happen ... So if you didn't set out to copy anyone, post it anyway.