ITANAGAR, Oct 9: The Abotani Clan Organization (ATCO) is organizing its maiden foundation day cum Tani Festival fromOctober 25-31 next at IG Park, Itanagar. The weeklong programme will see participation from five tribes of Tani belt—Adi, Apatani, Galo, Nyishi and Tagin. Various events such as Genealogy, Mythology and others depicting the culture will be the key attractions.