The holiest river in India is the Ganges, also known as the Ganga. It holds immense spiritual and religious significance for the people of India and is considered sacred by Hindus. The river is worshipped as the goddess Ganga and is believed to have the power to cleanse sins and grant salvation.

The Ganges is the longest river in India, stretching over 2,525 kilometers from its source in the Himalayas to the Bay of Bengal. It passes through several states, including Uttarakhand, Uttar Pradesh, Bihar, and West Bengal, and is a lifeline for millions of people who depend on it for various purposes.

Religious Significance:
- The Ganges is mentioned in ancient Hindu scriptures, including the Vedas and the Puranas, and is considered one of the seven sacred rivers in Hinduism.
- It is believed that bathing in the Ganges can purify a person's soul and wash away their sins. Devotees from all over India and even abroad travel to the river to take a holy dip, especially during religious festivals like Kumbh Mela.
- The ashes of the deceased are often immersed in the Ganges, as it is believed to help in the soul's journey to the afterlife.
- Many important religious sites and cities are located along the banks of the Ganges, including Varanasi, Allahabad, and Haridwar. These places are considered highly auspicious and attract pilgrims and tourists alike.

Environmental Significance:
- The Ganges is not only important from a religious perspective but also plays a crucial role in the ecosystem and economy of the region.
- It supports a diverse range of flora and fauna, including the endangered Gangetic dolphin.
- The river provides water for irrigation, agriculture, and hydropower generation, contributing to the livelihoods of millions of people.
- Despite its significance, the Ganges faces numerous environmental challenges, including pollution from industrial and domestic waste. Efforts are being made to clean the river and preserve its sanctity.

In conclusion, the Ganges river holds great religious and cultural importance for the people of India. It is revered as a sacred river and is believed to have the power to cleanse sins and grant salvation. Additionally, the Ganges supports the livelihoods of millions and plays a vital role in the ecosystem.