How have the premodern Shaiva ascetic sect of the Nath Yogis (known also as the Yogis with splitted ears) succeeded in maintaining its presence and importance until today? This book intends to give a general survey of this sampradaya which is said to have been founded by the Siddha Gorakhnath, known for his strong link to Hatha Yoga. However, rather than to Yoga, the history and expansion of the Nath sect are linked to its rich legendary corpus. Dealing first with the marks of belonging (such as the huge earring worn by the fully initiated Yogis) which give the sect its unity.