About one fourth of the area of Goa is under forests and the same originates from Archaean rock formations which are very thick. The soil is murum on the slopes. Many commercial tree species thrive in the well-aerated soils at the foothills where the murum is mixed with humus to form a loamy soil, where the growth is often thick and high. In the valleys where perennial natural water springs occur, there are plantations of areca nut. In Goa, forests are confined to the western Ghat foot-hill slopes mainly in the talukas of Sangium, Satari, Canacona and Quepem and to a lesser extent in the talukas of Ponda, Pernem and Bicholim. The coastal talukas of Tiswadi, Bardaz and Salcete had no

forests. The entire land is covered with verdant forest, coconut, cashew-nut and mango tree groves, interspersed with extensive paddy fields for cultivation of rice offers a marked and refreshing contract to the arid hinterland. The port of Marmugao situated on the southern side of Zauri river is one of the best natural harbours on the west coast of India and can shelter larger ocean liners. Teak of good quality is one of the products of the forests of Goa which also produce bamboo. Eucalyptus trees and oil are among the other products