issues of tribal and marginalised people. So much so that, a quarter of a century later, India Today mentioned the people behind the "forest satyagraha" of the Chipko movement as among "100 people who shaped India". One of Chipko's most salient features was the mass participation of female villagers. It was largely female activists that played pivotal role in the movement. Gaura Devi was the leading activist who started this movement, other participants were Chandi Prasad Bhatt, Sunderlal Bahuguna, and Ghanshyam Raturi, the popular Chipko poet. Geography Uttarakhand has a total area of , of which 86% is mountainous and 65% is covered by forest. Most of the northern part of the state is covered by high Himalayan peaks and glaciers. In the first half of the nineteenth century, the expanding development of Indian roads, railways and other physical infrastructure was giving rise to concerns over indiscriminate logging, particularly in the Himalaya. Two of the most important rivers in Hinduism originate in the glaciers of Uttarakhand, the Ganges at Gangotri and the Yamuna at Yamunotri. They are fed by myriad lakes, glacial melts and streams. These two along with Badrinath and Kedarnath form the Chota Char Dham, a holy pilgrimage for the Hindus. The state hosts the Bengal tiger in Jim Corbett National Park, the oldest national park of the Indian subcontinent. The Nanda Devi and Valley of Flowers National Parks, a UNESCO World Heritage Site located in the upper expanses of Bhyundar Ganga near Joshimath in Gharwal region, is known for the variety and rarity of its flowers and plants. One who raised this was Sir Joseph Dalton Hooker, Director of the Royal Botanic Gardens, Kew, who visited the region. As a consequence, Lord Dalhousie issued the Indian Forest Charter in 1855, reversing the previous laissez-faire policy. The following Indian Forest Act of 1878 put Indian forestry on a solid scientific basis. A direct consequence was the founding of the Imperial Forest School at Dehradun by Dietrich Brandis in 1878. Renamed the 'Imperial Forest Research Institute' in 1906, it is now known as the Forest Research Institute. The model "Forest Circles" around Dehradun, used for training, demonstration and scientific measurements, had a lasting positive influence on the forests and ecology of the region. The Himalayan ecosystem provides habitat for many animals (including bharal, snow leopards, leopards and tigers), plants, and rare herbs. Uttarakhand lies on the southern slope of