When I have a vision my eyes glow green, and I see in a green light. If it is a voluntary vision, I end up with an image of the main point sort of... etched into an emerald plaque, I suppose. It would be easier to show you, there will likely be one on Sunday.
The river and mountains were surrounding my home, and the cracks were both literal and metaphorical.
With the planned vision, there is a ceremony involving sand, or it could have been the entrance to my 'vision cave' at home that you saw. There is an hourglass shaped entrance, with falling sand.