a few days later in the cool room that byrne university's geological institute and so met he and his team take a closer look at the sediment inside the plastic tubes they've already determined the most promising layers. what we've laid out comes from a 6 metre deep hole so here we have the lake bed now and in 6 metres depth formulate bottom maybe a few 1000 years ago suitors have cited depth of about 3 metres according to the radar picture it has to be here somewhere we expect to find the form of lake bed on which they built the mounds. so the idea is the ice cut through that and see if we can find any organic material we can date with the radio carbon method. in the laboratory the plastic tube sections cut open lengthwise. the sediment layers a cafe separated. put it down back ok. in front a little pressure. pull it back. here. perfect wonderful. and exact image as the cools interior hopefully it will show enough traces of organic fossils that can be used to gauge the lay is a. if you zoom right in you can see lots of black spots in the core samples we hope it's organic material pla