Vashistha Muni was one of the Saptarishis (Seven Great Sages) in ancient India. He was the manas putra of Lord Brahma & also the Guru of Lord Ram. Legend has it that Vashistha Muni meditated in a cave near Rishikesh for a considerable duration of time after the death of his children. This cave, situated approx. 25 kms from Rishikesh on the road to Badrinath, became known as Vashistha Gufa.
In the early 1900’s, three sages were referred to as Himavat Vibhooti amongst the locals and sadhus in Uttarakhand. These three sages were Sri Swami Tapovan ji Maharaj, Sri Swami Sivananda and Sri Swami Purushottamananda.
Swami Purushottamanandji Maharaj went wandering round the Himalayas in early 1920s, During his wanderings by foot he came across this Guha in 1928. The cave was surrounded by tall trees and it was all a jungle. He lived inside the Guha - doing his meditation / austerities for more than 25 years till a room was built for him near the Guha. Eventually, an ashram was established there. Today Gurudev, visited the Vashishta Gufa Ashram, thereby paying homage to all the three mahatmas known as Himavat Vibhooti.
More info: http://raftingcampingrishikesh.com/