Pithoragarh district is at about 3600m high from sea level and Vyas cave is situated here on a mountain near Kalapani.

All the 18 Puranas, Brahma Sutra, and Mahabharatha got composed by the Ved Vyasa in this cave hence it is referred to as Vyas Cave. There caves originated in the town of Vyaspur which is currently named as Bilaspur in the state of Himachal Pradesh. As it is located at the Satluj bank, this place is meant to be the Holy place in the Badrinath.

Other attractions nearby the caves are Kalapani spring, Budhi, Kali temple, and Gunji. These caves remain enwrapped with snow and having mountains accompanied by forests of Juniper and Pine in its surroundings. These caves are not easily approachable and therefore rock climbing becomes necessary. For the tourists visiting this place, there are facilities of paragliding, hand gliding along with trekking offered here adding to their excitement and the Uttaranchal tourism shoulders this responsibility quite well.

A large part of Saraswati River is grabbed by this Vyas cave at the meeting point of river of Alaknanda. From this place, one can also avail the picturesque view of the Saraswati River. The people who visited Badrinath also got the opportunity to see the statue of Vyasa Rishi in this cave. These caves are also accompanied by the Ganesha caves.

Source:

http://www.discoveredindia.com/himachal-pradesh/attractions/caves/

http://www.merapahadforum.com/religious-places-of-uttarakhand/ved-vyas-cave-in-uttarakhand/