After the magnificent mythical battle, where the ogres entered Rock Maze, seeking the hidden mystical entrance to the Unicorn Kingdom, a metal can was flung far from the entrance, landing near the base of a tree stump.
For it was nearing the end of the battle, when the Unicorns realized that in order to secure their safety and the sanctity of their home, the future of their species and the Brotherhood of the Horn, that they must take that metal canister they had found and fling it far away. For the ogres had been seeking metal to smelt down and use to make weapons of ogre destruction to use against the hobbits of yonder dale and the elves of misty valley across the eastern divide by the swallow falls.
By doing so, they flushed the ogres from the cragged rock maze, as they lifted their blunt noses to the sky and sniffed for that strange rectangular canister that some being named Marty McFly had brought back in time to show them. As they wended their way through the rock maze, trees twisted and tangled their roots, densely forming a camouflage that would confuse them, and a name was written on the rock formation, a name that has stood through the years and has been the dense warning system for the hidden entrance to the Unicorn Valley, where they have resided happily with no fear of hatred or angst as people have ceased searching for them and the mythical qualities of their horn, which could only be harvested twice a year when the shell would shed and a new iridescent color would replace the old, indicating the age of the unicorn and their status in the valley hierarchy.