nature and heritage in the doon valley, dehradun

dehradun uttarakhand doon valley forest research institute colonial architecture robber's cave gucchupani shivalik hills himalayan foothills scenic beauty educational hub natural landscapes cityscape mussoorie cultural life indian tourism tranquil surroundings lush greenery iconic landmarks serene environment golden hour heritage uttarakhand mountain views streams historical buildings adventure peaceful valleys vibrant city trails rocky gorges destinations sunset nature heritage spots retreats hill station landscapes