Ukhrul district is famous for:

Shirui Lily
Dzukou Valley
Tharon Cave
None of the above

Ukhrul district is famous for Shirui Lily. It is a rare and beautiful flower that blooms only once a year in the month of May. The flower is found in the Shirui Hills of Ukhrul district, and it is a major tourist attraction. The flower is also known as the “Queen of the Lily” and it is the state flower of Manipur.

Dzukou Valley is a high-altitude valley located in the Ukhrul district of Manipur. The valley is known for its beautiful scenery and its annual Dzukou Valley Rhododendron Festival. The festival is held in the month of February and it attracts tourists from all over the world.

Tharon Cave is a limestone cave located in the Ukhrul district of Manipur. The cave is known for its stalactites and stalagmites, and it is a popular tourist destination. The cave is also home to a variety of bats and other animals.

Therefore, the correct answer to the question “Ukhrul district is famous for: Shirui Lily / Dzukou Valley / Tharon Cave / None of the above” is Shirui Lily.