a vermicular or pisolitic structure and contains a large amount of water. There is little soil cover over most of the hilltop. The topmost layer of rock is a soft porous iron-clay, through which there is drainage of water by the beginning of summer. Forest and vegetation Semi-evergreen forests are present in the Matheran. The trees are evergreen, making the plateau forests very dense and even congested in places. The laterite, porous soil along with very heavy rainfall mixed with dense fog has resulted in unique flora rich in diversity on the plateau. The forests show vegetation in top, middle and ground storeys. The trees form a cover over a large variety of shade loving herbs, climbers, ferns and mosses. The forests of Matheran have attracted many botanists: Smyth J.Y.(1871), Birdwood H.M. (1886) and (1896), Cooke T. (1887–1901), Woodrow G.M. (1897–1901), Irani N.A.(1962), Satyanarayann & Mudliar (1959), Vartak, V.D.(1966), Kothari & Moorthy (1993). A good collection of the dried plants is deposited in the Blatter Herbarium, St. Xavier's College, Bombay, Mumbai. Matheran has a huge number of medicinal plants and herbs. It was declared an Eco-Sensitive zone (ESZ) by the Union Environment Ministry on 4 February 2003. The declaration as ESZ has led to the stoppage of developmental activities and construction of hazardous industries. List of trees reported to be found in Matheran The vegetation of the area depends on the type and depth of the soil. Due to poor soil depth, the vegetation on the edges of the plateaus is poor. Due to heavy rainfall, dissected hilly terrain and excessive leaching of the soil, the exposed areas become less fertile and become less moisture retentive, resulting in shallow rooted vegetation. It is required to plant trees to protect the soil cover from losing its valuable humidity and fertility. The winds are very strong and blow from west or southwest during monsoon and also dry winds blow during the three months from January to March. These winds tend to shear and bend the plants while absorbing their moisture. Wildlife The town also has a large monkey population, including bonnet macaques and Hanuman langurs. Domesticated horses for riding are also in large numbers and are one of the icons of Matheran. Inside the forests, animals like barking deer, Malabar giant squirrels, foxes, wild boars, mongooses can be found. But these animals are rare in numbers compared to the monkeys and usually