Ever wanted to move mountains? You can. Losi has this little plastic mountain designed for rock crawling with your littlest rock crawlers (such as the Losi 1:24 Micro Rock Crawler). I honestly don't think this is a must-have for me (and $25.00 for a plastic mountain seems a bit much). If you are really into micro rock crawling and don't want to carry a bunch of rocks or desk-size obstacles around with you, you might like this Micro Terrain Mountain. It measures 16x28 inches by 10 inches high so it's not tiny but still portable (or movable).