Bhrigu lake is a prominent lake located on the right of Rohtang pass at an altitude of 4240m. It has been said that Bhrigu Rishi meditated here for many years. Lake is well known for its majestic beauty as it keeps on changing colors with each passing year. In summers it turns its colors to blue and in late summers it changes its color to emerald green. This trek takes you through the fir forest, green meadows, and rhododendron. The breathtaking view of Snow capped DhaulaDhar range in the background is equally rewarding through the trek.