[@Silvan Haven]I just went with the estimate because Zarkun mentioned it and I kinda decided "Hey, that sounds nice and deep, let's go with that." That, plus me forgetting that Cities often have Sewer systems and the like lead to me just throwing out that random estimate without really thinking. So. . . after some re-thinking lets to with a more modest figure of between a quarter-mile to half a quarter mile underground. That more reasonable?