Kalki is a significant figure in Hindu eschatology, believed to be the tenth and final avatar of the god Vishnu. He is prophesied to appear in the future, riding a white horse and wielding a sword, to restore righteousness and destroy evil at the end of the current age, known as Kali Yuga. The concept of Kalki embodies hope for a better future, symbolizing the triumph of good over evil. His arrival is anticipated to bring about a new era of truth and virtue, marking the beginning of a new cycle in the cosmic order, known as Satya Yuga.