This pretty much blows my mind. According to Lance ______, there are four identical records given to four groups of people that describe what will happen right before the Lord comes. Interesting that the Hopi stone has not been translated to this point. When I find more references to the other three groups that have similar prophecy stones, I will post them. This is definitely a work in progress where I know there is alot more fascinating information out there to be dug up.
This is an excerpt from the previous post on Ogden Kraut's book on the Three Nephites. Enjoy!
President Brigham Young firmly believed in sending the gospel to all the Lamanites, and sent a group of missionaries to the Hopi as well as to the other tribes. In 1859 he sent Jacob Hamblin with a company that consisted of Marion J. Shelton, Thales Haskell, Taylor Crosby, Benjamin Knell, Ira Hatch, and John Wm. Young.
They reached the Hopi villages November 6, talked with the Indians three days and then left the work of possible conversion on the shoulders of Shelton and Haskell, who returned to the Santa Clara the next spring.
The Indians were kind but unbelieving and could make no move until the reappearance of the THREE PROPHETS who led their fathers to that land and told them to remain on these rocks until they should come again and tell them what to do."
The trust placed in Mormon visitors to the Hopi was shown by exhibition to them of a sacred stone. On one of the visits of Andrew S. Gibbons, accompanied by his sons, Wm. H. and Richard, the three were guests of old Chief Tuba in Oraibi.
Tuba told of this sacred stone and led his friends down into an underground kiva, from which Tuba's son was dispatched into a more remote chamber. He returned bringing the stone. Apparently it was of very fine-grained marble, about 15 x 18 inches in diameter and a few inches in thickness. Its surface was entirely covered with hieroglyphic markings, concerning which there was no attempt at translation at the time, though there were etched upon it clouds and stars. The Indians appeared to have no translation and only knew that it was very sacred. Tuba said that at one time the stone incautiously was exhibited to an army officer, who attempted to seize it, but the Indians saved the relic and hid it more securely.
 The only official record available about the stone is found in the preface of Ethnological Report No. 4, as follows:
"Mr. G. K. Gilbert furnished some data relating to the sacred stone kept by the Indians of the village of Oraibi, on the Moki mesas. This stone was seen by Messers. John W. Young and Andrew S. Gibbons, and the notes were made by Mr. Gilbert from those furnished him by Young. Few white men have had access to this sacred relic, and but few Indians have enjoyed the privilege. The stone is a red-clouded marble, entirely different from anything found in the region." (Mormon Settlement in Arizona, McClintock, see pages 65 and 81.)