Abstract Location- Uttarakhand Detination : Ruinsara Lake Trek Duration – 5days Difficulty- easy Max Altitude :- 12,000 Ft.  Approx Trek length :- 54 Kms. Description- At day 1 trek begins from sankari to chillurgad. trekkers begin to enjoy the beautiful view of Himalayan Mountains like Swargarohini, Vijay Top, Leka Danda etc. Others attraction includes dense forests of Deodar, Pine, Maple, Rhodendron, Oaks etc and wild animals like Wild Boar, Deer, Wild cock etc. At day 2 trek begins from chillurgad to Rainbasera. Trekkers enjoy panoramic views of Supin river. During trek trekkers get to see beautiful mountains, meadows, waterfall, dense forests of different flora etc. During trek trekkers also have to cross river Supin and can enjoy bird watching of bird like monal, vulture, griffon, koel, sparrow etc. On arriving at Rainbasera trekkers enjoy cool breeze and beauty of river Supin. At day 3 trekkers start their trek from Rainbasera to Ruinsara lake. During the trek trekkers enjoy viewing waterfalls, streamlets, dense forests of Local Jamun, Bhojpatra etc. On arriving Ruinsara lake trekkers camp nearby lake where they can see wild animals like wild boar, black bear, leopard, blue sheep, bharrals, Ghorals etc and get to enjoy beautiful scene of sunset and different panoramic views of peaks like black peak, swargarohini 1, Ruinsara peak, hanging glacier etc. At day 4 trekkers start their trek from Ruinsara lake to Devsu bugyal. During the trek trekkers enjoy seeing Great Himalayan Meadows and trees of Bhojpatra and a large variety of flora and fauna. On reaching Devsu Bugyal trekkers can enjoy sightseeing and at night can enjoy star gazing. At day 5 trekkers start their trek from devsu bugyal to sankari via seema. On arriving Sankari trekkers can enjoy sightseeing of different mountain ranges along with beautiful Himalayan sunset and can also explore local market.