The adverse environmental impact of tourism and hydroelectric projects in Kulu-Manali in the north-western Himalayas has reached an alarming situation. More than 10,000 green trees have been cut during the past two years and about 30,000 are awaiting the axe of the so-called, development in this district. The Rs 2,000-crore project of the Rohtang tunnel would require felling of 684 fully grown and 350 small trees, just to make an approach road to the south portal of the tunnel, besides 20,000 trees would be cut to complete the 2051-MW Parbati hydroelectric project in the Manikaran and Sainj valleys of the district.