This trek covers the higher reaches of the Barsey Rhododendron Sanctuary in Eastern Himalayas, which is famous for its flowers, and spectacular mountain views of Kangchendzonga and the Everest. The highlights of this trek start with camping in dense Oak forest amidst the calls of barking deer and wild birds. The trial is rich in floral diversity and especially in spring in Rhododendron are in full bloom with their white, yellow, pink and crimson red bell shaped blossoms. In Barsey one passes through dense thickets of Rhododendrons below the Tal Mountain ridge laden with conifer forest of silver fir and hemlock. The trek winds its way through the source of two rivers, which originate from moist grassy meadows.