Dr. Alessandro Ielpi et al. published in Nature Communications
It has been previously assumed that large and deep rivers could not have developed in the Precambrian due to lack of stabilizing vegetation. In this article, the authors challenge this assumption, demonstrating through remote sensing and outcrop data that large channels with scale comparable to the largest modern rivers on Earth did in fact exist in the Proterozoic.
On the photo, Dr. Ielpi and his crew are ground-checking one of the Proterozoic channel bodies in Nunavut.