This Resource Book (Volume 1) and Toolkit (Volume 2) bring together the practical concepts, tools, and approaches needed to develop a type of mountain tourism in the Himalayas that can generate sustainable benefits for mountain people while conserving the breathtaking beauty of the environment. The materials are a revised and expanded version of the course materials used in a training course held in 2006 by ICIMOD, the Netherlands Development Organisation SNV/Nepal, and the Nepal Tourism Board (NTB), under ADB’s SASEC Plan, for representatives of national and state tourism organisations from various Himalayan countries. They provide a comprehensive resource document for development of a sustainable mountain tourism approach with illustrative case studies from the Himalayan region.