Tourists asked to stop tossing coins in Mount Fuji ponds over water concerns

Oshino Hakkai ponds with Mount Fuji in the background - (Getty Images/iStockphoto)

Concerns have been raised at a Mount Fuji Unesco World Heritage site over tourists tossing coins in crystal-clear ponds.

Tourists have been tossing coins into the famous ponds at the base of Mount Fuji, causing both residents and visitors to become worried about the water quality.