In a desperate attempt to prevent further ecological catastrophe and destruction, the Kogi Mamos broke their silence and allowed a small BBC film crew into their isolated mountaintop civilization to hear their message and warning to Younger Brother. The subsequent messages and warnings were voiced in the documentary From the Heart of The World - The Elder Brother's Warning on YouTube. After the documentary was filmed, the Kogi Mamos returned to their work in isolation and asked outsiders not to come to their land.