My wife bought me the entire series for Christmas 2019 for my Nook book, just 2 months before the lockdown for Covid 19. I had just started the series in late January and I was gone to a place 30,000 years ago and lived in Ayla's world for the first 3 months of the pandemic. I loved it and it helped keep me from dwelling on what was going on all around us that I couldn't do much about anyway. I highly recommend reading the series, and look online to see the maps of where they traveled and view the paintings from the walls of the caves they visited. You too will be immersed in a world before time began...