The Hopi are an amazing culture, and their wisdom has largely been unheard. This is by Gary David from Ancient Origins, and I think you'll find it fascinating. There is also a Part 2. Excerpt:
Many Hopi spiritual elders (singular, kikmongwi) claim that we are living in the final days of the Fourth World. For more than 60 years, different Hopis have predicted various Earth changes that signal the conclusion of the current age and the onset of the Fifth World. In 1970, Dan Katchongva, Sun Clan leader from the village of Hotevilla, who died at age 112, spoke about deteriorating conditions of our time:
We have teachings and prophecies informing us that we must be alert for the signs and omens which will come about to give us courage and strength to stand on our beliefs. Blood will flow. Our hair and our clothing will be scattered upon the earth. Nature will speak to us with its mighty breath of wind. There will be earthquakes and floods causing great disasters, changes in the seasons and in the weather, disappearance of wildlife, and famine in different forms. There will be gradual corruption and confusion among the leaders and the people all over the world, and wars will come about like powerful winds. All of this has been planned from the beginning of creation.