Microbial mats from Lake Hoare in Antarctica show similar appearance to those of Middle Island sinkhole. Image courtesy of Thunder Bay Sinkholes 2008. Photo: © 1996 Dale T. Andersen.
Microbial mats from Lake Hoare in Antarctica show similar appearance to those of Middle Island sinkhole. Image courtesy of Thunder Bay Sinkholes 2008. Photo: © 1996 Dale T. Andersen.