It's been cloudy and raining lately in Northern California so it's time to go mental ... create something from your imagination. This is a composite of two images ... my narrow band image of the Bubble Nebula and a boardwalk from Yellowstone NP. Using PS I cut out the boardwalk and pasted it into the Bubble Nebula image. Since the boardwalk was backlit by the sun, we created the "star" to illuminate the scene and create the shadows. Note how all the shadows aim back to the "star". The flow of the image creates a feeling of 3 - D.