A free program for Android, by Tordus Games.

If you love puzzles and nature, then you should give Mountains Jigsaw Puzzles a try. You’ll surely enjoy this game as it features hundreds of breathtaking images of mountains from across the globe. It has six difficulty levels that will help improve your patience and attention to detail. You can also use Mountains Jigsaw Puzzles to destress from the rigors of everyday life. 

It has an autosave system for preventing loss of progress, as well as an intuitive user interface for ease of use. What’s more, you can solve multiple puzzles at once without losing your current progress. Both kids and adults can play this mentally stimulating game. Mountains Jigsaw Puzzles is now available for download on the Play Store.