The Great Bath, a significant archaeological discovery, was found on the site of Mohenjodaro.

1. Mohenjodaro:
Mohenjodaro, meaning "Mound of the Dead" in Sindhi, is an ancient city located in present-day Pakistan. It was one of the largest settlements of the Indus Valley Civilization, which thrived around 2500 BCE to 1900 BCE. Mohenjodaro is a UNESCO World Heritage Site and has provided valuable insights into the life and culture of the ancient Indus Valley people.

2. Great Bath:
The Great Bath is one of the most prominent structures found at the Mohenjodaro site. It is a large rectangular water tank made of tightly fitted bricks and covered with a thick layer of bitumen to make it waterproof. The bath measures about 12 meters long, 7 meters wide, and 2.4 meters deep. It has a flight of steps on either end, allowing easy access to the water.

3. Purpose and Significance:
The purpose of the Great Bath is still debated among archaeologists and historians. It is believed to have served as a public bathing area or a religious ritual site. The presence of changing rooms and small chambers around the bath suggests that it may have been used for various purposes, including religious ceremonies, purification rituals, or social gatherings.

4. Architecture and Engineering:
The construction of the Great Bath showcases the advanced architectural and engineering skills of the Indus Valley Civilization. The use of high-quality bricks, the careful arrangement of the bricks in a watertight manner, and the presence of a sophisticated drainage system are all testimony to their expertise in urban planning and construction.

5. Water Supply and Drainage:
The Great Bath was designed with a complex system of water supply and drainage. It had two large wells nearby that may have been used to fill the bath with water. The drained water from the bath was channeled into a well-built underground drainage system, ensuring the cleanliness and maintenance of the bath.

6. Role in Indus Valley Civilization:
The Great Bath of Mohenjodaro is considered a symbol of the advanced urban planning and sophisticated lifestyle of the Indus Valley Civilization. It reflects the importance of cleanliness, hygiene, and communal activities in their society. The discovery of the Great Bath has provided valuable insights into the social, religious, and cultural practices of the ancient Indus Valley people.

In conclusion, the Great Bath was discovered at the Mohenjodaro site, an ancient city of the Indus Valley Civilization. It is a remarkable structure that showcases the architectural and engineering skills of the civilization and provides insights into their way of life.