Artist Anne Percoco used plastic water bottles to create a mobile sculpture titled Indra’s Cloud to draw attention to the pollution in the Yamuna River, India’s most polluted river.

“The sculpture is a cloud of destructive environmental forces and a reminder of the interconnectedness of the natural world.”

The river, which is fed by glaciers in the Himalayas, is clear and clean in the mountains but by the time it reaches north India, it is polluted with untreated sewage, industrial waste and garbage. New Delhi alone dumps 58% of all its waste into the river. South of New Delhi, the river is unrecognizable and unusable for drinking or irrigation.