This jigsaw puzzle features one of the mysterious moving rocks that are found in the deserts of California and Nevada. These rocks and their trails have been observed since the 1940s, but no one has ever seen one of the rocks actually moving. Scientists do not yet know how the rocks move. More information on this mystery can be found at NASA’s roving rock page.
Jigsaw puzzle subject image credit: Special thanks to NASA Goddard Space Flight Center for making the photograph used for this jigsaw puzzle available through the Creative Commons Attribution license. Visit NASA Goddard Space Flight Center's Flickr photostream.
See all jigsaw puzzles based on NASA Goddard Space Flight Center's photographs.
Category: Other Nature