Speaking of sinkholes Kansas City has limestone quarries all under it. many of them are underground storage and manufacturing facilities. I used to work in one of them for about 3 years, 70 degrees year round in that one.
Some of the abandoned ones that were nor properly mined have developed sinkholes. One not to far to the west of Castle alfa6 developed some years back. Left a crater about 150 feet across. Another one collapased about 15 years ago and caused my Drs office at the time to be condemend, nice modern 3 story building only about 10 years old assumed a about a 10 degree list. The collapse even registered on several sesmigraphs around the KC area.
Regards
alfa6 ;>}
Old limestone quarries. That’s what we have all over this area. That’s what the newspaper articles are blaming for the cave-ins.