The crew of the R/V LAURENTIAN prepare to deploy a gravity core down 93 meters to collect sediment from the bottom of the isolated sinkhole. Image courtesy of Thunder Bay Sinkholes 2008.
The crew of the R/V LAURENTIAN prepare to deploy a gravity core down 93 meters to collect sediment from the bottom of the isolated sinkhole. Image courtesy of Thunder Bay Sinkholes 2008.