The biological diversity of the Annapurna Region is equally rivaled by its rich cultural diversity. Since the first trekker came to the Annapurna Sanctuary in 1957, the natural and cultural features of ACAP have made it the most popular tourist destination in Nepal, drawing more than 60 per cent of the country's total trekkers. ACAP follows three grass root philosophies: maximum peoples’ participation, sustainability, and its role as a catalyst (facilitator) whereby the local people are involved in all aspects of the conservation and development processes, both as principal actors and prime beneficiaries.