A sand mandala is being created this week at MIT. A group of Buddhist monks create a circular image 4 feet in diameter by painstakingly arranging individual grains of colored sand according to instructions from a 1000 year old text.
The most amazing part, though? After spending four days creating the mandala, the monks will carry it to the Charles and dump the sand in.
The MIT News piece describes the specific meaning of this design as well as details on viewing the construction process.