They may come as a vision you see in 3D - a dream - a connection with nature - through meditation.
You may not understand the vision when you receive it. It may take time for you to process.
A sacred circle of stone is placed on the ground. The individual remains in the circle for a certain period of time.
The person remains in the circle. Sometimes a helper will check on the person - in cases of bad weather or to be sure the person is OK.
In many instances one is taken out of their body and are confronted by both the angelic and the demonic aspects of their own fears.
This transformational experience has been sometimes been done with the use of natural pseudylics such as peyote, mescaline, and the South American Iawaska plant during sacred initiation rites. These plants were held as sacred teachers from the plant kingdom. The insights during the sacred space allowed the veils between this world and the next to be pulled back and for the individual voyager to transcend himself and this dimension.
When the quest is over the person leaves.