The raths will be driven through the chardham yatra route till the portals of the four Himalayan shrines are shut for the winter season.
"We have to keep the Ganga pollution free and restore the ancient river to its pristine glory. We have to help Prime Minister Narendra Modi fulfill his commitment to Ganga cleaning," Trivendra said while showing green flags to the chariots from his official residence here.
One rath will go from Haridwar to Badrinath, one from Rudraprayag to Kedarnath, one from Haridwar to Gangotri and the other from Dharasu to Yamunotri, an official release said.
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