Dudhia is a small hamlet on Mirik-Siliguri highway on the bank of river Balason. Darjeeling Gorkha Hill Council's Gokul Wayside Inn is the favourite tourist joint at Dudhia. It is also the only decent accommodation available around here. There are a few small tea shops where you can get other essentials.
Dudhia is a tranquil tourist spot. Above Gokul, as the hill starts rising from the plain, you can find Dudhia view point. You can see far and wide from here including great view of River Balasan.
From Dudhia you can go to the Panighata village located right across river Balason. The forest department bungalow on top of a small hillock is now mostly deserted. But the ground in front of the garden is a good view point from where a large area of the Terai plain is visible. The ground is also used by city adventurers during the winter months for camping. Lohagadh is few kilometers further from Panighata. The place is on the Indo Nepal boarder. You can easily see nepali village of Salakpur across the river mechi from here.
Another nice tourist spot around Dudhia is Bunkulung. This is a small village on the banks of river Balasun. Bunkulung can be reached from Dudhai. As you start climbing the hills after crossing the Balasun river from Dudhia, about a kilometer away on a turn there is a diversion to the right. If you take the right diversion, Bunkulung would be just 4 km away. The small picturesque village has a homestay where basic amenities are available. You can ask the owner to arrange for organic vegetables and cook them yourself. The road from Bunkulung may be continued further to cross Balasun and take a different and less travel route to Kurseong through Ambootia tea estate. The road connects to the more famous Pankhabari road. Confirm with locals before venturing into the route as the road sometimes remain closed due to landslide or other reasons.