Introduction:
The Indus Valley civilization was one of the earliest urban civilizations in the world, flourishing around 2500 BCE in what is now Pakistan and northwest India. It is known for its well-planned cities, advanced architecture, and sophisticated drainage systems. The civilization extended from modern-day northeast Afghanistan to Pakistan and northwest India.

Identification of the site:
The site of the Indus Valley civilization that is situated on the bank of the Luni River is Dholavira. Dholavira is one of the five largest Harappan sites and is located in the Kutch district of Gujarat, India. It is an archaeological site that has been excavated and studied extensively.

Significance of Dholavira:
Dholavira is considered one of the most important archaeological sites related to the Indus Valley civilization. It is known for its well-preserved urban planning and advanced water management systems. The site provides valuable insights into the political, social, economic, and cultural aspects of the Indus Valley civilization.

Features of Dholavira:
1. Harappan Town Planning: Dholavira is divided into three parts: the Citadel, the Middle Town, and the Lower Town. The Citadel is fortified and contains important structures like the ruler's palace and the ceremonial ground.
2. Water Management: Dholavira has an elaborate water management system, including channels, reservoirs, and step wells. The water management system indicates the importance of agriculture and the efficient use of water resources in the civilization.
3. Significant Structures: The site has several impressive structures, including the Great Bath, which resembles the Great Bath at Mohenjo-daro. It also has large open spaces, buildings with multiple rooms, and an underground structure believed to be a granary.
4. Artifacts and Inscriptions: Excavations at Dholavira have uncovered a variety of artifacts, including pottery, seals, beads, jewelry, and terracotta figurines. The site is also known for its unique signboard-like inscriptions, which are yet to be fully deciphered.

Conclusion:
Dholavira, situated on the bank of the Luni River, is an important site of the Indus Valley civilization. Its well-preserved urban planning, advanced water management systems, and significant structures provide valuable insights into the civilization's culture and way of life. The site's excavation and study contribute to our understanding of the ancient Indus Valley civilization.