Kalyug, also known as the Kali Yuga, is the fourth and final stage in the cycle of four yugas, or eras, in Hinduism. According to Hindu belief, the Kali Yuga began around 3102 BCE and is said to last for 432,000 years. During this time, people are believed to be more materialistic, selfish, and immoral than in the previous yugas.
The end of the Kali Yuga is said to be marked by a great war and the arrival of Kalki, an avatar of Vishnu who will restore balance to the world. After this, the cycle of yugas will start again.
The exact details of what will happen in the future Kali Yuga are unknown, as it is still in the distant future. However, it is believed that the world will be restored to a state of balance and harmony, and that people will be more spiritual and moral than in the current Kali Yuga.