In this effort we started with identical images, formed by amalgamating and equalizing 4 USGS DEMs in the Zion-Grand Canyon area (36-38N, 112-114W). Here's the starting image much reduced.

Here are the finished pieces.

Richard van Lippe-Canyon Snow

Mystery Artist-Grand Canyon 2,001,996

Robert Hildebrand-Tourists

Linda Ewing-Grand Canyon Twilight