Darn, spoke too soon. Sorry, Stevenator. Not one page over from this topic is an entire thread devoted to the measurements and rationale behind these arches. The general current idea is that they are a collision mesh testbed, though there are more than one, leading me to believe thay are an easter egg. According to the rather vague info on one post, it has come to my understanding that there are at least two; one on either side of the nearside portion of the moon. So this may information may help you find them. Godspeed, Stevenator. ____ / \ ----> I I <------ \___/ Fail Mun FTW!!!!