About Gangtok, Sikkim & Darjeeling tourist place. in espanande kolakata., Rourkela

Gangtok is located at 27.3325°N 88.6140°E (coordinates of Gangtok head post office).[2] It is situated in the lower Himalayas at an altitude of 1,650 m (5,410 ft).[12] The town lies on one side of a hill, with "The Ridge",[6][13] a promenade housing the Raj Bhawan, the governor's residence, at one end and the palace, situated at an altitude of about 1,800 m (5,900 ft), at the other. The city is flanked on east and west by two streams, namely Roro Chu and Ranikhola, respectively.[11] These two rivers divide the natural drainage into two parts, the eastern and western parts. Both the streams meet the Ranipul and flow south as the main Ranikhola before it joins the Teesta at Singtam.[11] Most of the roads are steep, with the buildings built on compacted ground alongside them.[14]

Most of Sikkim, including Gangtok, is underlain by Precambrian rocks which contains foliated phyllites and schists; slopes are therefore prone to frequent landslides.[15] Surface runoff of water by natural streams (jhora) and man-made drains has contributed to the risk of landslides.[11] According to the Bureau of Indian Standards, the town falls under seismic zone-IV (on a scale of I to V, in order of increasing seismic activity), near the convergent boundary of the Indian and the Eurasian tectonic plates and is subject to frequent earthquakes. The hills are nestled within higher peaks and the snow-clad Himalayan ranges tower over the town from the distance. Mount Kanchenjunga (8,598 m or 28,208 ft)—the world's third-highest peak—is visible to the west of the city. The existence of steep slopes, vulnerability to landslides, large forest cover and inadequate access to most areas have been a major impediment to the natural and balanced growth of the city.[11]

There are densely forested regions around Gangtok, consisting of temperate, deciduous forests of poplar, birch, oak, and elm, as well as evergreen, coniferous trees of the wet alpine zone.[15] Orchids are common, and rare varieties of orchids are featured in flower shows in the city. Bamboos are also abundant. In the lower reaches of the town, the vegetation gradually changes from alpine to temperate deciduous and subtropical.[15] Flowers such as sunflower, marigold, poinsettia, and others bloom, especially in November and December.
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