Martyn Farr (born Crickhowell, Wales, March 3, 1951) is a leading exploratory cave diver and caver, known for his record-breaking cave dives[1][2][3] and the exploration of many miles of previously undiscovered underground passages (e.g. in Ogof y Daren Cilau and Noon's Hole). As an author and photographer,[citation needed] he has written many books on the subject of cave diving history and techniques and caving locations.[4]