Don't worry, I'm not suggesting you build a bridge to Mun, just on it. Specifically, build a bridge over any one of the many valleys on the Mun. This seems like a pretty challenging task in and of itself, so any and all mods are permitted. One or many launches, whatever it takes. The only actual requirement is that the bridge be traversable by a lone Kerbal. I'm working on a craft to attempt this challenge myself, and I look forward to seeing everyone else's successes (and failures!). As you can see, the most prominent valleys are on the rims of large craters. However, there appear to be smaller ones scattered about, so you are welcome to bridge whichever valley you choose. The definition of a bridge for the purposes of this project is as follows: - Reaches from one side of valley to the other. - The walking surface only contacts the ground on either side of the valley. Note that this does not preclude support structures, so long as they are not the walking surface itself. - Can hold the weight of at least one Kerbal long enough for said Kerbal to cross the bridge, with minimal jumping and no RCS use. If you want to kick it up a notch, here are some things I consider worthy of bonus points: - Length. The wider the valley, the bonusier the points. - Strength. A saggy bridge won't lose you points, but a nice, sturdy one may earn you some. - Stability. If you can time warp/switch to different ships and the bridge remains intact indefinitely, points will be awarded. - Capacity. The base requirement is one Kerbal, additional capacity (such as Kerbal armies or rovers) are worthy of reward.