I know a developer that bought a beautiful chunk of wooded, hillside land in a very desirable zip code. He put in everything, the street, sidewalk, underground utilities, muni-water and sewer... everything. The second or third house that went up hit bones. Allegedly Indian bones. The entire thing came to a friggin' screaching halt for over three years. It nearly wiped him out. I forget how many lots there were exactly, big lots, like 1.5 acres each,,, we're talking $1.5M homes at a minimum, and this was 15 years ago.... but there were at least 30 lots. Pretty sure it was more than that. He took a huge hit and had to firesale everything. Got divorced too... I'm sure in no small part attributable to the stress he was under.Many, many years ago when they were building the one and only shopping center in my small southern town, they found a cemetery for buried slaves. It magically disappeared from the survey and title search, so I was told. In VA if there is an old cemetery on your land you have to allow access for descendant's of the deceased to visit. So far, no apparent effect on our weather