Early morning, drive to Yumthang, which is around 25 km from Lachung. The entire drive is around 1 and half hours one-way. In case you are traveling between April to June, you can witness the beautiful Singba Rhododendron Sanctuary in the Yumthang Valley blooming in color. You also have views of the snow-capped peaks and herds of wandering yaks. The Valley is also known for its hot-springs, and in case you are interested in a quick soak, please be warned that the water is dirty. Optional-Yumesamdong ? Yumesamdong, also known as zero-point is located a further 24 km from Yumthang. The journey trudges up a rugged mountain road, but it would be worth it to witness the view, and the fragrant Ezilia flowers in the region. From here, you will be driven directly to Gangtok, which is almost 125 km away. Overnight at hotel in Gangtok, to take rest before you head back.