Un "sinkhole" dans l'Idaho

http://www.ktvb.com/news/Cars-swallowed-by-North-Idaho-sinkhole-248840541.html

"Sinkholes à travers le monde":

https://www.google.ca/search?q=sinkhole+guatemala&rlz=1C1CHMO_frCA575CA575&oq=sinkhole+&aqs=chrome.1.69i57j0l5.10556j0j8&sourceid=chrome&espv=210&es_sm=93&ie=UTF-8#q=sinkhole+conscience-du-peuple.blogspot.com