Near Oraibi, Arizona, there is a petroglyph known as Prophecy Rock that symbolizes many Hopi prophecies said to be over 10,000 years old. Hopi is an ancient Indian village. Their ancestors passed down many prophecies on the origin, history and future of mankind. They did not use scripts but passed them down by word of mouth from generation to generation. In the 1950's, the prophecies were made public in English for the first time. Due to the remote history, hardly any one can provide an appropriate explanation of the leftmost radiating circle and the swastika in the center. Some websites even removed the left part and only explained the center part. The following is a summary of the past interpretations of the Prophecy Rock.

The time scale starts from the left to right and is in thousands of years along the horizontal direction. The swastika in the sun on the left side represents the origin of the universe. The large human figure on the left is the Great Spirit. The Top Line represents the path of white man's path of science and technology without any spirituality to balance it; the bottom line represents a spiritual path in harmony with nature. There are three vertical lines. The first line is the beginning time of the prophecy.

Each circle represents a cycle of life's annihilation and renewal. The leftmost small circle refers to the annihilation of humanity at the beginning of this cycle of civilization. It may match the "Great Flood" described in legend.

The bar between the paths, above the cross, is the coming of white men (the Cross is that of Christianity). It also shows a time when mankind decides which path to follow, materialism or spiritualism. The four small human figures on the upper road represent, on one level, the past three worlds and the present; on another level, the figures indicate that mankind will travel the white man's path, having been seduced by the glamour of its civilization on the surface. The two circles on the bottom line represent the first and second World Wars. The heavy dark vertical line at the end is the decision time for which path to follow, which is today. It represents the last chance for humanity to turn back to nature before the scientific road disintegrates and dissipates. If the material path is followed, as represented by the top horizontal line, the result is a very jagged line that will result in destruction. If the lower spiritual path is followed, the result will be peace and harmony.

The small circle after the last chance is the Great Purification, after which corn will grow in abundance again, the Great Spirit will return, and the Path of Life will continue forever...

Reference:

http://www.welcomehome.org/rainbow/prophecy/hopi1.html

http://www.v-j-enterprises.com/hopi.html