At the end of the last ice age, large glacial outburst floods carved out canyons, or coulees, in the landscape, so this area in Central Washington became known as “Coulee Country”. Sun Lakes State Park is at the center, and Coulee City is in the upper right corner of the image.
The Maps-Un-Natural™ series could also be called Psychedelic Maps. These are an effort to create a visually stunning and interesting image, usually with a limited color palette. The coloration varies only with elevation and often brings out notable landscape features.
These posters are available on high-quality media (various papers and canvas) using archival inks, and print clearly up to about 34” x 23” (“Large” size). Fulfilled by Zazzle.com. There is a framing option on their website.
Park information: http://www.parks.wa.gov/parks/?selectedpark=Sun%20Lakes