The Kelso Dune complex has some of the highest dunes (600 feet,160 meters) in the region. Few people realize however, that these magnificent dunes form only a small part of a much larger sand transport system that includes the Devil's Playground.
Huge amounts of sand were needed to build these delicate wind-created
sculptures, but geologists studying the Preserve discovered that new sand
is not presently replenishing the dunes. Where did the sand come from?
What made it stop accumulating? The Kelso Dune sands remained a mystery
From a distance Kelso's sand grains look monotonously similar, right? Take a closer look!
What makes those grains go?