Giant sinkholes found forming on the seafloor in northern Canada

Earth Holon Cont.

Data collected from 2010 to 2019 revealed that there were “extraordinarily rapid” changes to the seafloor along an area of permafrost that formed between 2,580,000 to 11,700 years ago. 

https://news.yahoo.com/giant-sinkholes-found-forming-seafloor-183630029.html?guce_referrer=YW5kcm9pZC1hcHA6Ly9jb20uZ29vZ2xlLmFuZHJvaWQuZ29vZ2xlcXVpY2tzZWFyY2hib3gv&guce_referrer_sig=AQAAALBWfMFxyou5aBHRQCnrEKtZJZ8vTLOGA_4A22SgkXIPstsV3_ZUjK-bgUl-N0vxxtU8IXN8OFHZpgLr1lxgDMq83d_MQU_2i35GRVgbJGEUm1oPNzGykI6mxMUwIUCC-f-zUIssMOzA2J3zxUe4uWOvmhqJBAMIeu5CmsHktST3

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