The granite plug in the center of the impact is about 50 km across. The group is actually sitting on granite with the overturned sediment layers visible to the north on the skyline behind Tim and Antonin. The group listen to Rodger Hart and Joe discuss the Vredefort impact. This is called pseudotachylite. We could see a lot of debris high above this spot along the river, evidence of the major flooding which happened the previous winter.
Large boulders appear to be suspended in the black shock-melted glass.
The BIFs were in the middle of a very large field full of termite mounds.