I have heard of and seen sand mandalas in Tibetan Buddhism.
Here is a picture:
I have two questions, which are related:
I have heard that upon completion they are erased to represent transience. Is this what the erasure represents?
What other spiritual significance does the mandala have in Tibetan Buddhism. I seem to remember something relating to a spiritual journey being represented in the mandala yet I am unsure. I would like clarification on this.