Ultimate Guide to Plan a Trip to Old Silk Route, Zuluk: The Best Kept Secret of Sikkim Post author By Madhurima Post date November 8, 2021 Categories In North east India, Sikkim, Travel India No Comments on Ultimate Guide to Plan a Trip to Old Silk Route, Zuluk: The Best Kept Secret of Sikkim A complete guide to visiting Zuluk on Old Silk Route from Bag Dogra airport or NJP station in December.